danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +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 | |
jkummerow@chromium.org | 93a47f4 | 2013-07-02 14:43:41 +0000 | [diff] [blame] | 30 | #if V8_TARGET_ARCH_MIPS |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 31 | |
| 32 | #include "bootstrapper.h" |
| 33 | #include "code-stubs.h" |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 34 | #include "codegen.h" |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 35 | #include "regexp-macro-assembler.h" |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 36 | #include "stub-cache.h" |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 37 | |
| 38 | namespace v8 { |
| 39 | namespace internal { |
| 40 | |
| 41 | |
verwaest@chromium.org | 662436e | 2013-08-28 08:41:27 +0000 | [diff] [blame] | 42 | void FastNewClosureStub::InitializeInterfaceDescriptor( |
| 43 | Isolate* isolate, |
| 44 | CodeStubInterfaceDescriptor* descriptor) { |
| 45 | static Register registers[] = { a2 }; |
| 46 | descriptor->register_param_count_ = 1; |
| 47 | descriptor->register_params_ = registers; |
| 48 | descriptor->deoptimization_handler_ = |
machenbach@chromium.org | 895f00d | 2014-03-27 01:04:43 +0000 | [diff] [blame] | 49 | Runtime::FunctionForId(Runtime::kHiddenNewClosureFromStubFailure)->entry; |
verwaest@chromium.org | 662436e | 2013-08-28 08:41:27 +0000 | [diff] [blame] | 50 | } |
| 51 | |
| 52 | |
palfia@homejinni.com | cc96b0e | 2014-01-23 17:24:54 +0000 | [diff] [blame] | 53 | void FastNewContextStub::InitializeInterfaceDescriptor( |
| 54 | Isolate* isolate, |
| 55 | CodeStubInterfaceDescriptor* descriptor) { |
| 56 | static Register registers[] = { a1 }; |
| 57 | descriptor->register_param_count_ = 1; |
| 58 | descriptor->register_params_ = registers; |
| 59 | descriptor->deoptimization_handler_ = NULL; |
| 60 | } |
| 61 | |
| 62 | |
yangguo@chromium.org | c73d55b | 2013-07-24 08:18:28 +0000 | [diff] [blame] | 63 | void ToNumberStub::InitializeInterfaceDescriptor( |
| 64 | Isolate* isolate, |
| 65 | CodeStubInterfaceDescriptor* descriptor) { |
| 66 | static Register registers[] = { a0 }; |
| 67 | descriptor->register_param_count_ = 1; |
| 68 | descriptor->register_params_ = registers; |
| 69 | descriptor->deoptimization_handler_ = NULL; |
| 70 | } |
| 71 | |
| 72 | |
machenbach@chromium.org | 3d079fe | 2013-09-25 08:19:55 +0000 | [diff] [blame] | 73 | void NumberToStringStub::InitializeInterfaceDescriptor( |
| 74 | Isolate* isolate, |
| 75 | CodeStubInterfaceDescriptor* descriptor) { |
| 76 | static Register registers[] = { a0 }; |
| 77 | descriptor->register_param_count_ = 1; |
| 78 | descriptor->register_params_ = registers; |
bmeurer@chromium.org | 71f9fca | 2013-10-22 08:00:09 +0000 | [diff] [blame] | 79 | descriptor->deoptimization_handler_ = |
machenbach@chromium.org | 9b95fd7 | 2014-03-26 01:04:35 +0000 | [diff] [blame] | 80 | Runtime::FunctionForId(Runtime::kHiddenNumberToString)->entry; |
machenbach@chromium.org | 3d079fe | 2013-09-25 08:19:55 +0000 | [diff] [blame] | 81 | } |
| 82 | |
| 83 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 84 | void FastCloneShallowArrayStub::InitializeInterfaceDescriptor( |
| 85 | Isolate* isolate, |
| 86 | CodeStubInterfaceDescriptor* descriptor) { |
| 87 | static Register registers[] = { a3, a2, a1 }; |
| 88 | descriptor->register_param_count_ = 3; |
| 89 | descriptor->register_params_ = registers; |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 90 | descriptor->deoptimization_handler_ = |
machenbach@chromium.org | 895f00d | 2014-03-27 01:04:43 +0000 | [diff] [blame] | 91 | Runtime::FunctionForId( |
| 92 | Runtime::kHiddenCreateArrayLiteralStubBailout)->entry; |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 93 | } |
| 94 | |
| 95 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 96 | void FastCloneShallowObjectStub::InitializeInterfaceDescriptor( |
| 97 | Isolate* isolate, |
| 98 | CodeStubInterfaceDescriptor* descriptor) { |
| 99 | static Register registers[] = { a3, a2, a1, a0 }; |
| 100 | descriptor->register_param_count_ = 4; |
| 101 | descriptor->register_params_ = registers; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 102 | descriptor->deoptimization_handler_ = |
machenbach@chromium.org | 895f00d | 2014-03-27 01:04:43 +0000 | [diff] [blame] | 103 | Runtime::FunctionForId(Runtime::kHiddenCreateObjectLiteral)->entry; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | |
danno@chromium.org | bee5199 | 2013-07-10 14:57:15 +0000 | [diff] [blame] | 107 | void CreateAllocationSiteStub::InitializeInterfaceDescriptor( |
| 108 | Isolate* isolate, |
| 109 | CodeStubInterfaceDescriptor* descriptor) { |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 110 | static Register registers[] = { a2, a3 }; |
| 111 | descriptor->register_param_count_ = 2; |
danno@chromium.org | bee5199 | 2013-07-10 14:57:15 +0000 | [diff] [blame] | 112 | descriptor->register_params_ = registers; |
| 113 | descriptor->deoptimization_handler_ = NULL; |
| 114 | } |
| 115 | |
| 116 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 117 | void KeyedLoadFastElementStub::InitializeInterfaceDescriptor( |
| 118 | Isolate* isolate, |
| 119 | CodeStubInterfaceDescriptor* descriptor) { |
| 120 | static Register registers[] = { a1, a0 }; |
| 121 | descriptor->register_param_count_ = 2; |
| 122 | descriptor->register_params_ = registers; |
| 123 | descriptor->deoptimization_handler_ = |
mstarzinger@chromium.org | e3b8d0f | 2013-02-01 09:06:41 +0000 | [diff] [blame] | 124 | FUNCTION_ADDR(KeyedLoadIC_MissFromStubFailure); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | |
machenbach@chromium.org | ea46888 | 2013-11-18 08:53:19 +0000 | [diff] [blame] | 128 | void KeyedLoadDictionaryElementStub::InitializeInterfaceDescriptor( |
| 129 | Isolate* isolate, |
| 130 | CodeStubInterfaceDescriptor* descriptor) { |
| 131 | static Register registers[] = {a1, a0 }; |
| 132 | descriptor->register_param_count_ = 2; |
| 133 | descriptor->register_params_ = registers; |
| 134 | descriptor->deoptimization_handler_ = |
| 135 | FUNCTION_ADDR(KeyedLoadIC_MissFromStubFailure); |
| 136 | } |
| 137 | |
| 138 | |
machenbach@chromium.org | 09cae8d | 2014-01-30 01:05:27 +0000 | [diff] [blame] | 139 | void RegExpConstructResultStub::InitializeInterfaceDescriptor( |
| 140 | Isolate* isolate, |
| 141 | CodeStubInterfaceDescriptor* descriptor) { |
| 142 | static Register registers[] = { a2, a1, a0 }; |
| 143 | descriptor->register_param_count_ = 3; |
| 144 | descriptor->register_params_ = registers; |
| 145 | descriptor->deoptimization_handler_ = |
machenbach@chromium.org | 9b95fd7 | 2014-03-26 01:04:35 +0000 | [diff] [blame] | 146 | Runtime::FunctionForId(Runtime::kHiddenRegExpConstructResult)->entry; |
machenbach@chromium.org | 09cae8d | 2014-01-30 01:05:27 +0000 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 150 | void LoadFieldStub::InitializeInterfaceDescriptor( |
| 151 | Isolate* isolate, |
| 152 | CodeStubInterfaceDescriptor* descriptor) { |
| 153 | static Register registers[] = { a0 }; |
| 154 | descriptor->register_param_count_ = 1; |
| 155 | descriptor->register_params_ = registers; |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 156 | descriptor->deoptimization_handler_ = NULL; |
| 157 | } |
| 158 | |
| 159 | |
| 160 | void KeyedLoadFieldStub::InitializeInterfaceDescriptor( |
| 161 | Isolate* isolate, |
| 162 | CodeStubInterfaceDescriptor* descriptor) { |
| 163 | static Register registers[] = { a1 }; |
| 164 | descriptor->register_param_count_ = 1; |
| 165 | descriptor->register_params_ = registers; |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 166 | descriptor->deoptimization_handler_ = NULL; |
| 167 | } |
| 168 | |
| 169 | |
machenbach@chromium.org | 381adef | 2014-03-14 03:04:56 +0000 | [diff] [blame] | 170 | void StringLengthStub::InitializeInterfaceDescriptor( |
| 171 | Isolate* isolate, |
| 172 | CodeStubInterfaceDescriptor* descriptor) { |
| 173 | static Register registers[] = { a0, a2 }; |
| 174 | descriptor->register_param_count_ = 2; |
| 175 | descriptor->register_params_ = registers; |
| 176 | descriptor->deoptimization_handler_ = NULL; |
| 177 | } |
| 178 | |
| 179 | |
| 180 | void KeyedStringLengthStub::InitializeInterfaceDescriptor( |
| 181 | Isolate* isolate, |
| 182 | CodeStubInterfaceDescriptor* descriptor) { |
| 183 | static Register registers[] = { a1, a0 }; |
| 184 | descriptor->register_param_count_ = 2; |
| 185 | descriptor->register_params_ = registers; |
| 186 | descriptor->deoptimization_handler_ = NULL; |
| 187 | } |
| 188 | |
| 189 | |
danno@chromium.org | c99cd48 | 2013-03-21 15:26:42 +0000 | [diff] [blame] | 190 | void KeyedStoreFastElementStub::InitializeInterfaceDescriptor( |
| 191 | Isolate* isolate, |
| 192 | CodeStubInterfaceDescriptor* descriptor) { |
| 193 | static Register registers[] = { a2, a1, a0 }; |
| 194 | descriptor->register_param_count_ = 3; |
| 195 | descriptor->register_params_ = registers; |
| 196 | descriptor->deoptimization_handler_ = |
| 197 | FUNCTION_ADDR(KeyedStoreIC_MissFromStubFailure); |
| 198 | } |
| 199 | |
| 200 | |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 201 | void TransitionElementsKindStub::InitializeInterfaceDescriptor( |
| 202 | Isolate* isolate, |
| 203 | CodeStubInterfaceDescriptor* descriptor) { |
| 204 | static Register registers[] = { a0, a1 }; |
| 205 | descriptor->register_param_count_ = 2; |
| 206 | descriptor->register_params_ = registers; |
| 207 | Address entry = |
| 208 | Runtime::FunctionForId(Runtime::kTransitionElementsKind)->entry; |
| 209 | descriptor->deoptimization_handler_ = FUNCTION_ADDR(entry); |
| 210 | } |
| 211 | |
| 212 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 213 | void CompareNilICStub::InitializeInterfaceDescriptor( |
| 214 | Isolate* isolate, |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 215 | CodeStubInterfaceDescriptor* descriptor) { |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 216 | static Register registers[] = { a0 }; |
| 217 | descriptor->register_param_count_ = 1; |
| 218 | descriptor->register_params_ = registers; |
| 219 | descriptor->deoptimization_handler_ = |
| 220 | FUNCTION_ADDR(CompareNilIC_Miss); |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 221 | descriptor->SetMissHandler( |
| 222 | ExternalReference(IC_Utility(IC::kCompareNilIC_Miss), isolate)); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 223 | } |
| 224 | |
| 225 | |
| 226 | static void InitializeArrayConstructorDescriptor( |
| 227 | Isolate* isolate, |
| 228 | CodeStubInterfaceDescriptor* descriptor, |
| 229 | int constant_stack_parameter_count) { |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 230 | // register state |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 231 | // a0 -- number of arguments |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame] | 232 | // a1 -- function |
machenbach@chromium.org | 6d26cbb | 2014-01-22 10:50:56 +0000 | [diff] [blame] | 233 | // a2 -- allocation site with elements kind |
machenbach@chromium.org | feecfde | 2013-11-14 10:55:00 +0000 | [diff] [blame] | 234 | static Register registers_variable_args[] = { a1, a2, a0 }; |
| 235 | static Register registers_no_args[] = { a1, a2 }; |
| 236 | |
| 237 | if (constant_stack_parameter_count == 0) { |
| 238 | descriptor->register_param_count_ = 2; |
| 239 | descriptor->register_params_ = registers_no_args; |
| 240 | } else { |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 241 | // stack param count needs (constructor pointer, and single argument) |
machenbach@chromium.org | feecfde | 2013-11-14 10:55:00 +0000 | [diff] [blame] | 242 | descriptor->handler_arguments_mode_ = PASS_ARGUMENTS; |
bmeurer@chromium.org | 0fdb2a6 | 2013-10-21 07:19:36 +0000 | [diff] [blame] | 243 | descriptor->stack_parameter_count_ = a0; |
machenbach@chromium.org | feecfde | 2013-11-14 10:55:00 +0000 | [diff] [blame] | 244 | descriptor->register_param_count_ = 3; |
| 245 | descriptor->register_params_ = registers_variable_args; |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 246 | } |
machenbach@chromium.org | feecfde | 2013-11-14 10:55:00 +0000 | [diff] [blame] | 247 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 248 | descriptor->hint_stack_parameter_count_ = constant_stack_parameter_count; |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 249 | descriptor->function_mode_ = JS_FUNCTION_STUB_MODE; |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 250 | descriptor->deoptimization_handler_ = |
machenbach@chromium.org | 895f00d | 2014-03-27 01:04:43 +0000 | [diff] [blame] | 251 | Runtime::FunctionForId(Runtime::kHiddenArrayConstructor)->entry; |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 255 | static void InitializeInternalArrayConstructorDescriptor( |
| 256 | Isolate* isolate, |
| 257 | CodeStubInterfaceDescriptor* descriptor, |
| 258 | int constant_stack_parameter_count) { |
| 259 | // register state |
| 260 | // a0 -- number of arguments |
| 261 | // a1 -- constructor function |
machenbach@chromium.org | feecfde | 2013-11-14 10:55:00 +0000 | [diff] [blame] | 262 | static Register registers_variable_args[] = { a1, a0 }; |
| 263 | static Register registers_no_args[] = { a1 }; |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 264 | |
machenbach@chromium.org | feecfde | 2013-11-14 10:55:00 +0000 | [diff] [blame] | 265 | if (constant_stack_parameter_count == 0) { |
| 266 | descriptor->register_param_count_ = 1; |
| 267 | descriptor->register_params_ = registers_no_args; |
| 268 | } else { |
| 269 | // stack param count needs (constructor pointer, and single argument) |
| 270 | descriptor->handler_arguments_mode_ = PASS_ARGUMENTS; |
bmeurer@chromium.org | 0fdb2a6 | 2013-10-21 07:19:36 +0000 | [diff] [blame] | 271 | descriptor->stack_parameter_count_ = a0; |
machenbach@chromium.org | feecfde | 2013-11-14 10:55:00 +0000 | [diff] [blame] | 272 | descriptor->register_param_count_ = 2; |
| 273 | descriptor->register_params_ = registers_variable_args; |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 274 | } |
machenbach@chromium.org | feecfde | 2013-11-14 10:55:00 +0000 | [diff] [blame] | 275 | |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 276 | descriptor->hint_stack_parameter_count_ = constant_stack_parameter_count; |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 277 | descriptor->function_mode_ = JS_FUNCTION_STUB_MODE; |
| 278 | descriptor->deoptimization_handler_ = |
machenbach@chromium.org | 895f00d | 2014-03-27 01:04:43 +0000 | [diff] [blame] | 279 | Runtime::FunctionForId(Runtime::kHiddenInternalArrayConstructor)->entry; |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 280 | } |
| 281 | |
| 282 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 283 | void ArrayNoArgumentConstructorStub::InitializeInterfaceDescriptor( |
| 284 | Isolate* isolate, |
| 285 | CodeStubInterfaceDescriptor* descriptor) { |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 286 | InitializeArrayConstructorDescriptor(isolate, descriptor, 0); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 287 | } |
| 288 | |
| 289 | |
| 290 | void ArraySingleArgumentConstructorStub::InitializeInterfaceDescriptor( |
| 291 | Isolate* isolate, |
| 292 | CodeStubInterfaceDescriptor* descriptor) { |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 293 | InitializeArrayConstructorDescriptor(isolate, descriptor, 1); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 294 | } |
| 295 | |
| 296 | |
| 297 | void ArrayNArgumentsConstructorStub::InitializeInterfaceDescriptor( |
| 298 | Isolate* isolate, |
| 299 | CodeStubInterfaceDescriptor* descriptor) { |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 300 | InitializeArrayConstructorDescriptor(isolate, descriptor, -1); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 301 | } |
| 302 | |
| 303 | |
rossberg@chromium.org | b99c754 | 2013-05-31 11:40:45 +0000 | [diff] [blame] | 304 | void ToBooleanStub::InitializeInterfaceDescriptor( |
| 305 | Isolate* isolate, |
| 306 | CodeStubInterfaceDescriptor* descriptor) { |
| 307 | static Register registers[] = { a0 }; |
| 308 | descriptor->register_param_count_ = 1; |
| 309 | descriptor->register_params_ = registers; |
| 310 | descriptor->deoptimization_handler_ = |
| 311 | FUNCTION_ADDR(ToBooleanIC_Miss); |
| 312 | descriptor->SetMissHandler( |
| 313 | ExternalReference(IC_Utility(IC::kToBooleanIC_Miss), isolate)); |
| 314 | } |
| 315 | |
| 316 | |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 317 | void InternalArrayNoArgumentConstructorStub::InitializeInterfaceDescriptor( |
| 318 | Isolate* isolate, |
| 319 | CodeStubInterfaceDescriptor* descriptor) { |
| 320 | InitializeInternalArrayConstructorDescriptor(isolate, descriptor, 0); |
| 321 | } |
| 322 | |
| 323 | |
| 324 | void InternalArraySingleArgumentConstructorStub::InitializeInterfaceDescriptor( |
| 325 | Isolate* isolate, |
| 326 | CodeStubInterfaceDescriptor* descriptor) { |
| 327 | InitializeInternalArrayConstructorDescriptor(isolate, descriptor, 1); |
| 328 | } |
| 329 | |
| 330 | |
| 331 | void InternalArrayNArgumentsConstructorStub::InitializeInterfaceDescriptor( |
| 332 | Isolate* isolate, |
| 333 | CodeStubInterfaceDescriptor* descriptor) { |
| 334 | InitializeInternalArrayConstructorDescriptor(isolate, descriptor, -1); |
| 335 | } |
| 336 | |
| 337 | |
mstarzinger@chromium.org | e0e1b0d | 2013-07-08 08:38:06 +0000 | [diff] [blame] | 338 | void StoreGlobalStub::InitializeInterfaceDescriptor( |
| 339 | Isolate* isolate, |
| 340 | CodeStubInterfaceDescriptor* descriptor) { |
| 341 | static Register registers[] = { a1, a2, a0 }; |
| 342 | descriptor->register_param_count_ = 3; |
| 343 | descriptor->register_params_ = registers; |
| 344 | descriptor->deoptimization_handler_ = |
| 345 | FUNCTION_ADDR(StoreIC_MissFromStubFailure); |
| 346 | } |
| 347 | |
| 348 | |
jkummerow@chromium.org | ba72ec8 | 2013-07-22 09:21:20 +0000 | [diff] [blame] | 349 | void ElementsTransitionAndStoreStub::InitializeInterfaceDescriptor( |
| 350 | Isolate* isolate, |
| 351 | CodeStubInterfaceDescriptor* descriptor) { |
| 352 | static Register registers[] = { a0, a3, a1, a2 }; |
| 353 | descriptor->register_param_count_ = 4; |
| 354 | descriptor->register_params_ = registers; |
| 355 | descriptor->deoptimization_handler_ = |
| 356 | FUNCTION_ADDR(ElementsTransitionAndStoreIC_Miss); |
| 357 | } |
| 358 | |
| 359 | |
ulan@chromium.org | 0f13e74 | 2014-01-03 15:51:11 +0000 | [diff] [blame] | 360 | void BinaryOpICStub::InitializeInterfaceDescriptor( |
| 361 | Isolate* isolate, |
| 362 | CodeStubInterfaceDescriptor* descriptor) { |
| 363 | static Register registers[] = { a1, a0 }; |
| 364 | descriptor->register_param_count_ = 2; |
| 365 | descriptor->register_params_ = registers; |
| 366 | descriptor->deoptimization_handler_ = FUNCTION_ADDR(BinaryOpIC_Miss); |
| 367 | descriptor->SetMissHandler( |
| 368 | ExternalReference(IC_Utility(IC::kBinaryOpIC_Miss), isolate)); |
| 369 | } |
| 370 | |
| 371 | |
| 372 | void BinaryOpWithAllocationSiteStub::InitializeInterfaceDescriptor( |
| 373 | Isolate* isolate, |
| 374 | CodeStubInterfaceDescriptor* descriptor) { |
| 375 | static Register registers[] = { a2, a1, a0 }; |
| 376 | descriptor->register_param_count_ = 3; |
| 377 | descriptor->register_params_ = registers; |
| 378 | descriptor->deoptimization_handler_ = |
| 379 | FUNCTION_ADDR(BinaryOpIC_MissWithAllocationSite); |
| 380 | } |
| 381 | |
| 382 | |
machenbach@chromium.org | bbbda92 | 2014-01-23 09:38:20 +0000 | [diff] [blame] | 383 | void StringAddStub::InitializeInterfaceDescriptor( |
machenbach@chromium.org | 0cc0950 | 2013-11-13 12:20:55 +0000 | [diff] [blame] | 384 | Isolate* isolate, |
| 385 | CodeStubInterfaceDescriptor* descriptor) { |
| 386 | static Register registers[] = { a1, a0 }; |
| 387 | descriptor->register_param_count_ = 2; |
| 388 | descriptor->register_params_ = registers; |
| 389 | descriptor->deoptimization_handler_ = |
machenbach@chromium.org | 9b95fd7 | 2014-03-26 01:04:35 +0000 | [diff] [blame] | 390 | Runtime::FunctionForId(Runtime::kHiddenStringAdd)->entry; |
machenbach@chromium.org | 0cc0950 | 2013-11-13 12:20:55 +0000 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | |
machenbach@chromium.org | 26ca35c | 2014-01-16 08:22:55 +0000 | [diff] [blame] | 394 | void CallDescriptors::InitializeForIsolate(Isolate* isolate) { |
| 395 | { |
| 396 | CallInterfaceDescriptor* descriptor = |
| 397 | isolate->call_descriptor(Isolate::ArgumentAdaptorCall); |
| 398 | static Register registers[] = { a1, // JSFunction |
| 399 | cp, // context |
| 400 | a0, // actual number of arguments |
| 401 | a2, // expected number of arguments |
| 402 | }; |
| 403 | static Representation representations[] = { |
| 404 | Representation::Tagged(), // JSFunction |
| 405 | Representation::Tagged(), // context |
| 406 | Representation::Integer32(), // actual number of arguments |
| 407 | Representation::Integer32(), // expected number of arguments |
| 408 | }; |
| 409 | descriptor->register_param_count_ = 4; |
| 410 | descriptor->register_params_ = registers; |
| 411 | descriptor->param_representations_ = representations; |
| 412 | } |
| 413 | { |
| 414 | CallInterfaceDescriptor* descriptor = |
| 415 | isolate->call_descriptor(Isolate::KeyedCall); |
| 416 | static Register registers[] = { cp, // context |
| 417 | a2, // key |
| 418 | }; |
| 419 | static Representation representations[] = { |
| 420 | Representation::Tagged(), // context |
| 421 | Representation::Tagged(), // key |
| 422 | }; |
| 423 | descriptor->register_param_count_ = 2; |
| 424 | descriptor->register_params_ = registers; |
| 425 | descriptor->param_representations_ = representations; |
| 426 | } |
| 427 | { |
| 428 | CallInterfaceDescriptor* descriptor = |
| 429 | isolate->call_descriptor(Isolate::NamedCall); |
| 430 | static Register registers[] = { cp, // context |
| 431 | a2, // name |
| 432 | }; |
| 433 | static Representation representations[] = { |
| 434 | Representation::Tagged(), // context |
| 435 | Representation::Tagged(), // name |
| 436 | }; |
| 437 | descriptor->register_param_count_ = 2; |
| 438 | descriptor->register_params_ = registers; |
| 439 | descriptor->param_representations_ = representations; |
| 440 | } |
machenbach@chromium.org | af4fba3 | 2014-01-27 01:05:32 +0000 | [diff] [blame] | 441 | { |
| 442 | CallInterfaceDescriptor* descriptor = |
| 443 | isolate->call_descriptor(Isolate::CallHandler); |
| 444 | static Register registers[] = { cp, // context |
| 445 | a0, // receiver |
| 446 | }; |
| 447 | static Representation representations[] = { |
| 448 | Representation::Tagged(), // context |
| 449 | Representation::Tagged(), // receiver |
| 450 | }; |
| 451 | descriptor->register_param_count_ = 2; |
| 452 | descriptor->register_params_ = registers; |
| 453 | descriptor->param_representations_ = representations; |
| 454 | } |
machenbach@chromium.org | 57a54ac | 2014-01-31 14:01:53 +0000 | [diff] [blame] | 455 | { |
| 456 | CallInterfaceDescriptor* descriptor = |
| 457 | isolate->call_descriptor(Isolate::ApiFunctionCall); |
| 458 | static Register registers[] = { a0, // callee |
| 459 | t0, // call_data |
| 460 | a2, // holder |
| 461 | a1, // api_function_address |
| 462 | cp, // context |
| 463 | }; |
| 464 | static Representation representations[] = { |
| 465 | Representation::Tagged(), // callee |
| 466 | Representation::Tagged(), // call_data |
| 467 | Representation::Tagged(), // holder |
| 468 | Representation::External(), // api_function_address |
| 469 | Representation::Tagged(), // context |
| 470 | }; |
| 471 | descriptor->register_param_count_ = 5; |
| 472 | descriptor->register_params_ = registers; |
| 473 | descriptor->param_representations_ = representations; |
| 474 | } |
machenbach@chromium.org | 26ca35c | 2014-01-16 08:22:55 +0000 | [diff] [blame] | 475 | } |
| 476 | |
| 477 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 478 | #define __ ACCESS_MASM(masm) |
| 479 | |
mstarzinger@chromium.org | e0e1b0d | 2013-07-08 08:38:06 +0000 | [diff] [blame] | 480 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 481 | static void EmitIdenticalObjectComparison(MacroAssembler* masm, |
| 482 | Label* slow, |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 483 | Condition cc); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 484 | static void EmitSmiNonsmiComparison(MacroAssembler* masm, |
| 485 | Register lhs, |
| 486 | Register rhs, |
| 487 | Label* rhs_not_nan, |
| 488 | Label* slow, |
| 489 | bool strict); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 490 | static void EmitStrictTwoHeapObjectCompare(MacroAssembler* masm, |
| 491 | Register lhs, |
| 492 | Register rhs); |
| 493 | |
| 494 | |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 495 | void HydrogenCodeStub::GenerateLightweightMiss(MacroAssembler* masm) { |
| 496 | // Update the static counter each time a new code stub is generated. |
| 497 | Isolate* isolate = masm->isolate(); |
| 498 | isolate->counters()->code_stubs()->Increment(); |
| 499 | |
| 500 | CodeStubInterfaceDescriptor* descriptor = GetInterfaceDescriptor(isolate); |
| 501 | int param_count = descriptor->register_param_count_; |
| 502 | { |
| 503 | // Call the runtime system in a fresh internal frame. |
| 504 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 505 | ASSERT(descriptor->register_param_count_ == 0 || |
| 506 | a0.is(descriptor->register_params_[param_count - 1])); |
machenbach@chromium.org | 6f1040e | 2014-02-04 07:54:22 +0000 | [diff] [blame] | 507 | // Push arguments, adjust sp. |
| 508 | __ Subu(sp, sp, Operand(param_count * kPointerSize)); |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 509 | for (int i = 0; i < param_count; ++i) { |
machenbach@chromium.org | 6f1040e | 2014-02-04 07:54:22 +0000 | [diff] [blame] | 510 | // Store argument to stack. |
| 511 | __ sw(descriptor->register_params_[i], |
| 512 | MemOperand(sp, (param_count-1-i) * kPointerSize)); |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 513 | } |
svenpanne@chromium.org | a53e8e0 | 2013-05-24 12:35:50 +0000 | [diff] [blame] | 514 | ExternalReference miss = descriptor->miss_handler(); |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 515 | __ CallExternalReference(miss, descriptor->register_param_count_); |
| 516 | } |
| 517 | |
| 518 | __ Ret(); |
| 519 | } |
| 520 | |
| 521 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 522 | // Takes a Smi and converts to an IEEE 64 bit floating point value in two |
| 523 | // registers. The format is 1 sign bit, 11 exponent bits (biased 1023) and |
| 524 | // 52 fraction bits (20 in the first word, 32 in the second). Zeros is a |
| 525 | // scratch register. Destroys the source register. No GC occurs during this |
| 526 | // stub so you don't have to set up the frame. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 527 | class ConvertToDoubleStub : public PlatformCodeStub { |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 528 | public: |
| 529 | ConvertToDoubleStub(Register result_reg_1, |
| 530 | Register result_reg_2, |
| 531 | Register source_reg, |
| 532 | Register scratch_reg) |
| 533 | : result1_(result_reg_1), |
| 534 | result2_(result_reg_2), |
| 535 | source_(source_reg), |
| 536 | zeros_(scratch_reg) { } |
| 537 | |
| 538 | private: |
| 539 | Register result1_; |
| 540 | Register result2_; |
| 541 | Register source_; |
| 542 | Register zeros_; |
| 543 | |
| 544 | // Minor key encoding in 16 bits. |
| 545 | class ModeBits: public BitField<OverwriteMode, 0, 2> {}; |
| 546 | class OpBits: public BitField<Token::Value, 2, 14> {}; |
| 547 | |
| 548 | Major MajorKey() { return ConvertToDouble; } |
| 549 | int MinorKey() { |
| 550 | // Encode the parameters in a unique 16 bit value. |
| 551 | return result1_.code() + |
| 552 | (result2_.code() << 4) + |
| 553 | (source_.code() << 8) + |
| 554 | (zeros_.code() << 12); |
| 555 | } |
| 556 | |
| 557 | void Generate(MacroAssembler* masm); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 558 | }; |
| 559 | |
| 560 | |
| 561 | void ConvertToDoubleStub::Generate(MacroAssembler* masm) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 562 | #ifndef BIG_ENDIAN_FLOATING_POINT |
| 563 | Register exponent = result1_; |
| 564 | Register mantissa = result2_; |
| 565 | #else |
| 566 | Register exponent = result2_; |
| 567 | Register mantissa = result1_; |
| 568 | #endif |
| 569 | Label not_special; |
| 570 | // Convert from Smi to integer. |
| 571 | __ sra(source_, source_, kSmiTagSize); |
| 572 | // Move sign bit from source to destination. This works because the sign bit |
| 573 | // in the exponent word of the double has the same position and polarity as |
| 574 | // the 2's complement sign bit in a Smi. |
| 575 | STATIC_ASSERT(HeapNumber::kSignMask == 0x80000000u); |
| 576 | __ And(exponent, source_, Operand(HeapNumber::kSignMask)); |
| 577 | // Subtract from 0 if source was negative. |
| 578 | __ subu(at, zero_reg, source_); |
mstarzinger@chromium.org | 3233d2f | 2012-03-14 11:16:03 +0000 | [diff] [blame] | 579 | __ Movn(source_, at, exponent); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 580 | |
| 581 | // We have -1, 0 or 1, which we treat specially. Register source_ contains |
| 582 | // absolute value: it is either equal to 1 (special case of -1 and 1), |
| 583 | // greater than 1 (not a special case) or less than 1 (special case of 0). |
| 584 | __ Branch(¬_special, gt, source_, Operand(1)); |
| 585 | |
| 586 | // For 1 or -1 we need to or in the 0 exponent (biased to 1023). |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 587 | const uint32_t exponent_word_for_1 = |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 588 | HeapNumber::kExponentBias << HeapNumber::kExponentShift; |
| 589 | // Safe to use 'at' as dest reg here. |
| 590 | __ Or(at, exponent, Operand(exponent_word_for_1)); |
mstarzinger@chromium.org | 3233d2f | 2012-03-14 11:16:03 +0000 | [diff] [blame] | 591 | __ Movn(exponent, at, source_); // Write exp when source not 0. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 592 | // 1, 0 and -1 all have 0 for the second word. |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 593 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 594 | __ mov(mantissa, zero_reg); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 595 | |
| 596 | __ bind(¬_special); |
| 597 | // Count leading zeros. |
| 598 | // Gets the wrong answer for 0, but we already checked for that case above. |
mstarzinger@chromium.org | 3233d2f | 2012-03-14 11:16:03 +0000 | [diff] [blame] | 599 | __ Clz(zeros_, source_); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 600 | // Compute exponent and or it into the exponent register. |
| 601 | // We use mantissa as a scratch register here. |
| 602 | __ li(mantissa, Operand(31 + HeapNumber::kExponentBias)); |
| 603 | __ subu(mantissa, mantissa, zeros_); |
| 604 | __ sll(mantissa, mantissa, HeapNumber::kExponentShift); |
| 605 | __ Or(exponent, exponent, mantissa); |
| 606 | |
| 607 | // Shift up the source chopping the top bit off. |
| 608 | __ Addu(zeros_, zeros_, Operand(1)); |
| 609 | // This wouldn't work for 1.0 or -1.0 as the shift would be 32 which means 0. |
| 610 | __ sllv(source_, source_, zeros_); |
| 611 | // Compute lower part of fraction (last 12 bits). |
| 612 | __ sll(mantissa, source_, HeapNumber::kMantissaBitsInTopWord); |
| 613 | // And the top (top 20 bits). |
| 614 | __ srl(source_, source_, 32 - HeapNumber::kMantissaBitsInTopWord); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 615 | |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 616 | __ Ret(USE_DELAY_SLOT); |
| 617 | __ or_(exponent, exponent, source_); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 618 | } |
| 619 | |
| 620 | |
jkummerow@chromium.org | 8fa5bd9 | 2013-09-02 11:45:09 +0000 | [diff] [blame] | 621 | void DoubleToIStub::Generate(MacroAssembler* masm) { |
| 622 | Label out_of_range, only_low, negate, done; |
| 623 | Register input_reg = source(); |
| 624 | Register result_reg = destination(); |
| 625 | |
| 626 | int double_offset = offset(); |
| 627 | // Account for saved regs if input is sp. |
| 628 | if (input_reg.is(sp)) double_offset += 3 * kPointerSize; |
| 629 | |
| 630 | Register scratch = |
| 631 | GetRegisterThatIsNotOneOf(input_reg, result_reg); |
| 632 | Register scratch2 = |
| 633 | GetRegisterThatIsNotOneOf(input_reg, result_reg, scratch); |
| 634 | Register scratch3 = |
| 635 | GetRegisterThatIsNotOneOf(input_reg, result_reg, scratch, scratch2); |
bmeurer@chromium.org | 71f9fca | 2013-10-22 08:00:09 +0000 | [diff] [blame] | 636 | DoubleRegister double_scratch = kLithiumScratchDouble; |
jkummerow@chromium.org | 8fa5bd9 | 2013-09-02 11:45:09 +0000 | [diff] [blame] | 637 | |
| 638 | __ Push(scratch, scratch2, scratch3); |
| 639 | |
jkummerow@chromium.org | 8fa5bd9 | 2013-09-02 11:45:09 +0000 | [diff] [blame] | 640 | if (!skip_fastpath()) { |
bmeurer@chromium.org | 71f9fca | 2013-10-22 08:00:09 +0000 | [diff] [blame] | 641 | // Load double input. |
| 642 | __ ldc1(double_scratch, MemOperand(input_reg, double_offset)); |
| 643 | |
jkummerow@chromium.org | 8fa5bd9 | 2013-09-02 11:45:09 +0000 | [diff] [blame] | 644 | // Clear cumulative exception flags and save the FCSR. |
| 645 | __ cfc1(scratch2, FCSR); |
| 646 | __ ctc1(zero_reg, FCSR); |
bmeurer@chromium.org | 71f9fca | 2013-10-22 08:00:09 +0000 | [diff] [blame] | 647 | |
jkummerow@chromium.org | 8fa5bd9 | 2013-09-02 11:45:09 +0000 | [diff] [blame] | 648 | // Try a conversion to a signed integer. |
bmeurer@chromium.org | 71f9fca | 2013-10-22 08:00:09 +0000 | [diff] [blame] | 649 | __ Trunc_w_d(double_scratch, double_scratch); |
| 650 | // Move the converted value into the result register. |
machenbach@chromium.org | bbbda92 | 2014-01-23 09:38:20 +0000 | [diff] [blame] | 651 | __ mfc1(scratch3, double_scratch); |
bmeurer@chromium.org | 71f9fca | 2013-10-22 08:00:09 +0000 | [diff] [blame] | 652 | |
jkummerow@chromium.org | 8fa5bd9 | 2013-09-02 11:45:09 +0000 | [diff] [blame] | 653 | // Retrieve and restore the FCSR. |
| 654 | __ cfc1(scratch, FCSR); |
| 655 | __ ctc1(scratch2, FCSR); |
bmeurer@chromium.org | 71f9fca | 2013-10-22 08:00:09 +0000 | [diff] [blame] | 656 | |
jkummerow@chromium.org | 8fa5bd9 | 2013-09-02 11:45:09 +0000 | [diff] [blame] | 657 | // Check for overflow and NaNs. |
| 658 | __ And( |
| 659 | scratch, scratch, |
| 660 | kFCSROverflowFlagMask | kFCSRUnderflowFlagMask |
| 661 | | kFCSRInvalidOpFlagMask); |
machenbach@chromium.org | bbbda92 | 2014-01-23 09:38:20 +0000 | [diff] [blame] | 662 | // If we had no exceptions then set result_reg and we are done. |
| 663 | Label error; |
| 664 | __ Branch(&error, ne, scratch, Operand(zero_reg)); |
| 665 | __ Move(result_reg, scratch3); |
| 666 | __ Branch(&done); |
| 667 | __ bind(&error); |
jkummerow@chromium.org | 8fa5bd9 | 2013-09-02 11:45:09 +0000 | [diff] [blame] | 668 | } |
| 669 | |
| 670 | // Load the double value and perform a manual truncation. |
| 671 | Register input_high = scratch2; |
| 672 | Register input_low = scratch3; |
bmeurer@chromium.org | 71f9fca | 2013-10-22 08:00:09 +0000 | [diff] [blame] | 673 | |
| 674 | __ lw(input_low, MemOperand(input_reg, double_offset)); |
| 675 | __ lw(input_high, MemOperand(input_reg, double_offset + kIntSize)); |
jkummerow@chromium.org | 8fa5bd9 | 2013-09-02 11:45:09 +0000 | [diff] [blame] | 676 | |
jkummerow@chromium.org | 3d00d0a | 2013-09-04 13:57:32 +0000 | [diff] [blame] | 677 | Label normal_exponent, restore_sign; |
| 678 | // Extract the biased exponent in result. |
| 679 | __ Ext(result_reg, |
| 680 | input_high, |
| 681 | HeapNumber::kExponentShift, |
| 682 | HeapNumber::kExponentBits); |
| 683 | |
| 684 | // Check for Infinity and NaNs, which should return 0. |
| 685 | __ Subu(scratch, result_reg, HeapNumber::kExponentMask); |
| 686 | __ Movz(result_reg, zero_reg, scratch); |
| 687 | __ Branch(&done, eq, scratch, Operand(zero_reg)); |
| 688 | |
| 689 | // Express exponent as delta to (number of mantissa bits + 31). |
| 690 | __ Subu(result_reg, |
| 691 | result_reg, |
| 692 | Operand(HeapNumber::kExponentBias + HeapNumber::kMantissaBits + 31)); |
| 693 | |
| 694 | // If the delta is strictly positive, all bits would be shifted away, |
| 695 | // which means that we can return 0. |
| 696 | __ Branch(&normal_exponent, le, result_reg, Operand(zero_reg)); |
| 697 | __ mov(result_reg, zero_reg); |
| 698 | __ Branch(&done); |
| 699 | |
| 700 | __ bind(&normal_exponent); |
| 701 | const int kShiftBase = HeapNumber::kNonMantissaBitsInTopWord - 1; |
| 702 | // Calculate shift. |
| 703 | __ Addu(scratch, result_reg, Operand(kShiftBase + HeapNumber::kMantissaBits)); |
| 704 | |
| 705 | // Save the sign. |
| 706 | Register sign = result_reg; |
| 707 | result_reg = no_reg; |
| 708 | __ And(sign, input_high, Operand(HeapNumber::kSignMask)); |
| 709 | |
| 710 | // On ARM shifts > 31 bits are valid and will result in zero. On MIPS we need |
| 711 | // to check for this specific case. |
| 712 | Label high_shift_needed, high_shift_done; |
| 713 | __ Branch(&high_shift_needed, lt, scratch, Operand(32)); |
| 714 | __ mov(input_high, zero_reg); |
| 715 | __ Branch(&high_shift_done); |
| 716 | __ bind(&high_shift_needed); |
| 717 | |
| 718 | // Set the implicit 1 before the mantissa part in input_high. |
| 719 | __ Or(input_high, |
| 720 | input_high, |
| 721 | Operand(1 << HeapNumber::kMantissaBitsInTopWord)); |
| 722 | // Shift the mantissa bits to the correct position. |
| 723 | // We don't need to clear non-mantissa bits as they will be shifted away. |
| 724 | // If they weren't, it would mean that the answer is in the 32bit range. |
| 725 | __ sllv(input_high, input_high, scratch); |
| 726 | |
| 727 | __ bind(&high_shift_done); |
| 728 | |
| 729 | // Replace the shifted bits with bits from the lower mantissa word. |
| 730 | Label pos_shift, shift_done; |
| 731 | __ li(at, 32); |
| 732 | __ subu(scratch, at, scratch); |
| 733 | __ Branch(&pos_shift, ge, scratch, Operand(zero_reg)); |
| 734 | |
| 735 | // Negate scratch. |
| 736 | __ Subu(scratch, zero_reg, scratch); |
| 737 | __ sllv(input_low, input_low, scratch); |
| 738 | __ Branch(&shift_done); |
| 739 | |
| 740 | __ bind(&pos_shift); |
| 741 | __ srlv(input_low, input_low, scratch); |
| 742 | |
| 743 | __ bind(&shift_done); |
| 744 | __ Or(input_high, input_high, Operand(input_low)); |
| 745 | // Restore sign if necessary. |
| 746 | __ mov(scratch, sign); |
| 747 | result_reg = sign; |
| 748 | sign = no_reg; |
| 749 | __ Subu(result_reg, zero_reg, input_high); |
| 750 | __ Movz(result_reg, input_high, scratch); |
jkummerow@chromium.org | 8fa5bd9 | 2013-09-02 11:45:09 +0000 | [diff] [blame] | 751 | |
| 752 | __ bind(&done); |
| 753 | |
| 754 | __ Pop(scratch, scratch2, scratch3); |
| 755 | __ Ret(); |
| 756 | } |
| 757 | |
| 758 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 759 | void WriteInt32ToHeapNumberStub::GenerateFixedRegStubsAheadOfTime( |
| 760 | Isolate* isolate) { |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 761 | WriteInt32ToHeapNumberStub stub1(a1, v0, a2, a3); |
| 762 | WriteInt32ToHeapNumberStub stub2(a2, v0, a3, a0); |
machenbach@chromium.org | ce9c514 | 2013-12-03 08:00:39 +0000 | [diff] [blame] | 763 | stub1.GetCode(isolate); |
| 764 | stub2.GetCode(isolate); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 765 | } |
| 766 | |
| 767 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 768 | // See comment for class, this does NOT work for int32's that are in Smi range. |
| 769 | void WriteInt32ToHeapNumberStub::Generate(MacroAssembler* masm) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 770 | Label max_negative_int; |
| 771 | // the_int_ has the answer which is a signed int32 but not a Smi. |
| 772 | // We test for the special value that has a different exponent. |
| 773 | STATIC_ASSERT(HeapNumber::kSignMask == 0x80000000u); |
| 774 | // Test sign, and save for later conditionals. |
| 775 | __ And(sign_, the_int_, Operand(0x80000000u)); |
| 776 | __ Branch(&max_negative_int, eq, the_int_, Operand(0x80000000u)); |
| 777 | |
| 778 | // Set up the correct exponent in scratch_. All non-Smi int32s have the same. |
| 779 | // A non-Smi integer is 1.xxx * 2^30 so the exponent is 30 (biased). |
| 780 | uint32_t non_smi_exponent = |
| 781 | (HeapNumber::kExponentBias + 30) << HeapNumber::kExponentShift; |
| 782 | __ li(scratch_, Operand(non_smi_exponent)); |
| 783 | // Set the sign bit in scratch_ if the value was negative. |
| 784 | __ or_(scratch_, scratch_, sign_); |
| 785 | // Subtract from 0 if the value was negative. |
| 786 | __ subu(at, zero_reg, the_int_); |
mstarzinger@chromium.org | 3233d2f | 2012-03-14 11:16:03 +0000 | [diff] [blame] | 787 | __ Movn(the_int_, at, sign_); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 788 | // We should be masking the implict first digit of the mantissa away here, |
| 789 | // but it just ends up combining harmlessly with the last digit of the |
| 790 | // exponent that happens to be 1. The sign bit is 0 so we shift 10 to get |
| 791 | // the most significant 1 to hit the last bit of the 12 bit sign and exponent. |
| 792 | ASSERT(((1 << HeapNumber::kExponentShift) & non_smi_exponent) != 0); |
| 793 | const int shift_distance = HeapNumber::kNonMantissaBitsInTopWord - 2; |
| 794 | __ srl(at, the_int_, shift_distance); |
| 795 | __ or_(scratch_, scratch_, at); |
| 796 | __ sw(scratch_, FieldMemOperand(the_heap_number_, |
| 797 | HeapNumber::kExponentOffset)); |
| 798 | __ sll(scratch_, the_int_, 32 - shift_distance); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 799 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 800 | __ sw(scratch_, FieldMemOperand(the_heap_number_, |
| 801 | HeapNumber::kMantissaOffset)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 802 | |
| 803 | __ bind(&max_negative_int); |
| 804 | // The max negative int32 is stored as a positive number in the mantissa of |
| 805 | // a double because it uses a sign bit instead of using two's complement. |
| 806 | // The actual mantissa bits stored are all 0 because the implicit most |
| 807 | // significant 1 bit is not stored. |
| 808 | non_smi_exponent += 1 << HeapNumber::kExponentShift; |
| 809 | __ li(scratch_, Operand(HeapNumber::kSignMask | non_smi_exponent)); |
| 810 | __ sw(scratch_, |
| 811 | FieldMemOperand(the_heap_number_, HeapNumber::kExponentOffset)); |
| 812 | __ mov(scratch_, zero_reg); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 813 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 814 | __ sw(scratch_, |
| 815 | FieldMemOperand(the_heap_number_, HeapNumber::kMantissaOffset)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 816 | } |
| 817 | |
| 818 | |
| 819 | // Handle the case where the lhs and rhs are the same object. |
| 820 | // Equality is almost reflexive (everything but NaN), so this is a test |
| 821 | // for "identity and not NaN". |
| 822 | static void EmitIdenticalObjectComparison(MacroAssembler* masm, |
| 823 | Label* slow, |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 824 | Condition cc) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 825 | Label not_identical; |
| 826 | Label heap_number, return_equal; |
| 827 | Register exp_mask_reg = t5; |
| 828 | |
| 829 | __ Branch(¬_identical, ne, a0, Operand(a1)); |
| 830 | |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 831 | __ li(exp_mask_reg, Operand(HeapNumber::kExponentMask)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 832 | |
verwaest@chromium.org | d4be0f0 | 2013-06-05 13:39:03 +0000 | [diff] [blame] | 833 | // Test for NaN. Sadly, we can't just compare to Factory::nan_value(), |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 834 | // so we do the second best thing - test it ourselves. |
| 835 | // They are both equal and they are not both Smis so both of them are not |
| 836 | // Smis. If it's not a heap number, then return equal. |
| 837 | if (cc == less || cc == greater) { |
| 838 | __ GetObjectType(a0, t4, t4); |
| 839 | __ Branch(slow, greater, t4, Operand(FIRST_SPEC_OBJECT_TYPE)); |
| 840 | } else { |
| 841 | __ GetObjectType(a0, t4, t4); |
| 842 | __ Branch(&heap_number, eq, t4, Operand(HEAP_NUMBER_TYPE)); |
| 843 | // Comparing JS objects with <=, >= is complicated. |
| 844 | if (cc != eq) { |
| 845 | __ Branch(slow, greater, t4, Operand(FIRST_SPEC_OBJECT_TYPE)); |
| 846 | // Normally here we fall through to return_equal, but undefined is |
| 847 | // special: (undefined == undefined) == true, but |
| 848 | // (undefined <= undefined) == false! See ECMAScript 11.8.5. |
| 849 | if (cc == less_equal || cc == greater_equal) { |
| 850 | __ Branch(&return_equal, ne, t4, Operand(ODDBALL_TYPE)); |
| 851 | __ LoadRoot(t2, Heap::kUndefinedValueRootIndex); |
| 852 | __ Branch(&return_equal, ne, a0, Operand(t2)); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 853 | ASSERT(is_int16(GREATER) && is_int16(LESS)); |
| 854 | __ Ret(USE_DELAY_SLOT); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 855 | if (cc == le) { |
| 856 | // undefined <= undefined should fail. |
| 857 | __ li(v0, Operand(GREATER)); |
| 858 | } else { |
| 859 | // undefined >= undefined should fail. |
| 860 | __ li(v0, Operand(LESS)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 861 | } |
| 862 | } |
| 863 | } |
| 864 | } |
| 865 | |
| 866 | __ bind(&return_equal); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 867 | ASSERT(is_int16(GREATER) && is_int16(LESS)); |
| 868 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 869 | if (cc == less) { |
| 870 | __ li(v0, Operand(GREATER)); // Things aren't less than themselves. |
| 871 | } else if (cc == greater) { |
| 872 | __ li(v0, Operand(LESS)); // Things aren't greater than themselves. |
| 873 | } else { |
| 874 | __ mov(v0, zero_reg); // Things are <=, >=, ==, === themselves. |
| 875 | } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 876 | |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 877 | // For less and greater we don't have to check for NaN since the result of |
| 878 | // x < x is false regardless. For the others here is some code to check |
| 879 | // for NaN. |
| 880 | if (cc != lt && cc != gt) { |
| 881 | __ bind(&heap_number); |
| 882 | // It is a heap number, so return non-equal if it's NaN and equal if it's |
| 883 | // not NaN. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 884 | |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 885 | // The representation of NaN values has all exponent bits (52..62) set, |
| 886 | // and not all mantissa bits (0..51) clear. |
| 887 | // Read top bits of double representation (second word of value). |
| 888 | __ lw(t2, FieldMemOperand(a0, HeapNumber::kExponentOffset)); |
| 889 | // Test that exponent bits are all set. |
| 890 | __ And(t3, t2, Operand(exp_mask_reg)); |
| 891 | // If all bits not set (ne cond), then not a NaN, objects are equal. |
| 892 | __ Branch(&return_equal, ne, t3, Operand(exp_mask_reg)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 893 | |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 894 | // Shift out flag and all exponent bits, retaining only mantissa. |
| 895 | __ sll(t2, t2, HeapNumber::kNonMantissaBitsInTopWord); |
| 896 | // Or with all low-bits of mantissa. |
| 897 | __ lw(t3, FieldMemOperand(a0, HeapNumber::kMantissaOffset)); |
| 898 | __ Or(v0, t3, Operand(t2)); |
| 899 | // For equal we already have the right value in v0: Return zero (equal) |
| 900 | // if all bits in mantissa are zero (it's an Infinity) and non-zero if |
| 901 | // not (it's a NaN). For <= and >= we need to load v0 with the failing |
| 902 | // value if it's a NaN. |
| 903 | if (cc != eq) { |
| 904 | // All-zero means Infinity means equal. |
| 905 | __ Ret(eq, v0, Operand(zero_reg)); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 906 | ASSERT(is_int16(GREATER) && is_int16(LESS)); |
| 907 | __ Ret(USE_DELAY_SLOT); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 908 | if (cc == le) { |
| 909 | __ li(v0, Operand(GREATER)); // NaN <= NaN should fail. |
| 910 | } else { |
| 911 | __ li(v0, Operand(LESS)); // NaN >= NaN should fail. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 912 | } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 913 | } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 914 | } |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 915 | // No fall through here. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 916 | |
| 917 | __ bind(¬_identical); |
| 918 | } |
| 919 | |
| 920 | |
| 921 | static void EmitSmiNonsmiComparison(MacroAssembler* masm, |
| 922 | Register lhs, |
| 923 | Register rhs, |
| 924 | Label* both_loaded_as_doubles, |
| 925 | Label* slow, |
| 926 | bool strict) { |
| 927 | ASSERT((lhs.is(a0) && rhs.is(a1)) || |
| 928 | (lhs.is(a1) && rhs.is(a0))); |
| 929 | |
| 930 | Label lhs_is_smi; |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 931 | __ JumpIfSmi(lhs, &lhs_is_smi); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 932 | // Rhs is a Smi. |
| 933 | // Check whether the non-smi is a heap number. |
| 934 | __ GetObjectType(lhs, t4, t4); |
| 935 | if (strict) { |
| 936 | // If lhs was not a number and rhs was a Smi then strict equality cannot |
| 937 | // succeed. Return non-equal (lhs is already not zero). |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 938 | __ Ret(USE_DELAY_SLOT, ne, t4, Operand(HEAP_NUMBER_TYPE)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 939 | __ mov(v0, lhs); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 940 | } else { |
| 941 | // Smi compared non-strictly with a non-Smi non-heap-number. Call |
| 942 | // the runtime. |
| 943 | __ Branch(slow, ne, t4, Operand(HEAP_NUMBER_TYPE)); |
| 944 | } |
| 945 | |
| 946 | // Rhs is a smi, lhs is a number. |
| 947 | // Convert smi rhs to double. |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 948 | __ sra(at, rhs, kSmiTagSize); |
| 949 | __ mtc1(at, f14); |
| 950 | __ cvt_d_w(f14, f14); |
| 951 | __ ldc1(f12, FieldMemOperand(lhs, HeapNumber::kValueOffset)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 952 | |
| 953 | // We now have both loaded as doubles. |
| 954 | __ jmp(both_loaded_as_doubles); |
| 955 | |
| 956 | __ bind(&lhs_is_smi); |
| 957 | // Lhs is a Smi. Check whether the non-smi is a heap number. |
| 958 | __ GetObjectType(rhs, t4, t4); |
| 959 | if (strict) { |
| 960 | // If lhs was not a number and rhs was a Smi then strict equality cannot |
| 961 | // succeed. Return non-equal. |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 962 | __ Ret(USE_DELAY_SLOT, ne, t4, Operand(HEAP_NUMBER_TYPE)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 963 | __ li(v0, Operand(1)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 964 | } else { |
| 965 | // Smi compared non-strictly with a non-Smi non-heap-number. Call |
| 966 | // the runtime. |
| 967 | __ Branch(slow, ne, t4, Operand(HEAP_NUMBER_TYPE)); |
| 968 | } |
| 969 | |
| 970 | // Lhs is a smi, rhs is a number. |
| 971 | // Convert smi lhs to double. |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 972 | __ sra(at, lhs, kSmiTagSize); |
| 973 | __ mtc1(at, f12); |
| 974 | __ cvt_d_w(f12, f12); |
| 975 | __ ldc1(f14, FieldMemOperand(rhs, HeapNumber::kValueOffset)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 976 | // Fall through to both_loaded_as_doubles. |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 977 | } |
| 978 | |
| 979 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 980 | static void EmitStrictTwoHeapObjectCompare(MacroAssembler* masm, |
| 981 | Register lhs, |
| 982 | Register rhs) { |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 983 | // If either operand is a JS object or an oddball value, then they are |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 984 | // not equal since their pointers are different. |
| 985 | // There is no test for undetectability in strict equality. |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 986 | STATIC_ASSERT(LAST_TYPE == LAST_SPEC_OBJECT_TYPE); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 987 | Label first_non_object; |
| 988 | // Get the type of the first operand into a2 and compare it with |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 989 | // FIRST_SPEC_OBJECT_TYPE. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 990 | __ GetObjectType(lhs, a2, a2); |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 991 | __ Branch(&first_non_object, less, a2, Operand(FIRST_SPEC_OBJECT_TYPE)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 992 | |
| 993 | // Return non-zero. |
| 994 | Label return_not_equal; |
| 995 | __ bind(&return_not_equal); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 996 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 997 | __ li(v0, Operand(1)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 998 | |
| 999 | __ bind(&first_non_object); |
| 1000 | // Check for oddballs: true, false, null, undefined. |
| 1001 | __ Branch(&return_not_equal, eq, a2, Operand(ODDBALL_TYPE)); |
| 1002 | |
| 1003 | __ GetObjectType(rhs, a3, a3); |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 1004 | __ Branch(&return_not_equal, greater, a3, Operand(FIRST_SPEC_OBJECT_TYPE)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1005 | |
| 1006 | // Check for oddballs: true, false, null, undefined. |
| 1007 | __ Branch(&return_not_equal, eq, a3, Operand(ODDBALL_TYPE)); |
| 1008 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1009 | // Now that we have the types we might as well check for |
| 1010 | // internalized-internalized. |
jkummerow@chromium.org | ba72ec8 | 2013-07-22 09:21:20 +0000 | [diff] [blame] | 1011 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 1012 | __ Or(a2, a2, Operand(a3)); |
| 1013 | __ And(at, a2, Operand(kIsNotStringMask | kIsNotInternalizedMask)); |
| 1014 | __ Branch(&return_not_equal, eq, at, Operand(zero_reg)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1015 | } |
| 1016 | |
| 1017 | |
| 1018 | static void EmitCheckForTwoHeapNumbers(MacroAssembler* masm, |
| 1019 | Register lhs, |
| 1020 | Register rhs, |
| 1021 | Label* both_loaded_as_doubles, |
| 1022 | Label* not_heap_numbers, |
| 1023 | Label* slow) { |
| 1024 | __ GetObjectType(lhs, a3, a2); |
| 1025 | __ Branch(not_heap_numbers, ne, a2, Operand(HEAP_NUMBER_TYPE)); |
| 1026 | __ lw(a2, FieldMemOperand(rhs, HeapObject::kMapOffset)); |
| 1027 | // If first was a heap number & second wasn't, go to slow case. |
| 1028 | __ Branch(slow, ne, a3, Operand(a2)); |
| 1029 | |
| 1030 | // Both are heap numbers. Load them up then jump to the code we have |
| 1031 | // for that. |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1032 | __ ldc1(f12, FieldMemOperand(lhs, HeapNumber::kValueOffset)); |
| 1033 | __ ldc1(f14, FieldMemOperand(rhs, HeapNumber::kValueOffset)); |
| 1034 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1035 | __ jmp(both_loaded_as_doubles); |
| 1036 | } |
| 1037 | |
| 1038 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1039 | // Fast negative check for internalized-to-internalized equality. |
| 1040 | static void EmitCheckForInternalizedStringsOrObjects(MacroAssembler* masm, |
| 1041 | Register lhs, |
| 1042 | Register rhs, |
| 1043 | Label* possible_strings, |
| 1044 | Label* not_both_strings) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1045 | ASSERT((lhs.is(a0) && rhs.is(a1)) || |
| 1046 | (lhs.is(a1) && rhs.is(a0))); |
| 1047 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 1048 | // a2 is object type of rhs. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1049 | Label object_test; |
jkummerow@chromium.org | ba72ec8 | 2013-07-22 09:21:20 +0000 | [diff] [blame] | 1050 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1051 | __ And(at, a2, Operand(kIsNotStringMask)); |
| 1052 | __ Branch(&object_test, ne, at, Operand(zero_reg)); |
jkummerow@chromium.org | ba72ec8 | 2013-07-22 09:21:20 +0000 | [diff] [blame] | 1053 | __ And(at, a2, Operand(kIsNotInternalizedMask)); |
| 1054 | __ Branch(possible_strings, ne, at, Operand(zero_reg)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1055 | __ GetObjectType(rhs, a3, a3); |
| 1056 | __ Branch(not_both_strings, ge, a3, Operand(FIRST_NONSTRING_TYPE)); |
jkummerow@chromium.org | ba72ec8 | 2013-07-22 09:21:20 +0000 | [diff] [blame] | 1057 | __ And(at, a3, Operand(kIsNotInternalizedMask)); |
| 1058 | __ Branch(possible_strings, ne, at, Operand(zero_reg)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1059 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1060 | // Both are internalized strings. We already checked they weren't the same |
| 1061 | // pointer so they are not equal. |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 1062 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1063 | __ li(v0, Operand(1)); // Non-zero indicates not equal. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1064 | |
| 1065 | __ bind(&object_test); |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 1066 | __ Branch(not_both_strings, lt, a2, Operand(FIRST_SPEC_OBJECT_TYPE)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1067 | __ GetObjectType(rhs, a2, a3); |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 1068 | __ Branch(not_both_strings, lt, a3, Operand(FIRST_SPEC_OBJECT_TYPE)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1069 | |
| 1070 | // If both objects are undetectable, they are equal. Otherwise, they |
| 1071 | // are not equal, since they are different objects and an object is not |
| 1072 | // equal to undefined. |
| 1073 | __ lw(a3, FieldMemOperand(lhs, HeapObject::kMapOffset)); |
| 1074 | __ lbu(a2, FieldMemOperand(a2, Map::kBitFieldOffset)); |
| 1075 | __ lbu(a3, FieldMemOperand(a3, Map::kBitFieldOffset)); |
| 1076 | __ and_(a0, a2, a3); |
| 1077 | __ And(a0, a0, Operand(1 << Map::kIsUndetectable)); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 1078 | __ Ret(USE_DELAY_SLOT); |
| 1079 | __ xori(v0, a0, 1 << Map::kIsUndetectable); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1080 | } |
| 1081 | |
| 1082 | |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1083 | static void ICCompareStub_CheckInputType(MacroAssembler* masm, |
| 1084 | Register input, |
| 1085 | Register scratch, |
| 1086 | CompareIC::State expected, |
| 1087 | Label* fail) { |
| 1088 | Label ok; |
| 1089 | if (expected == CompareIC::SMI) { |
| 1090 | __ JumpIfNotSmi(input, fail); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1091 | } else if (expected == CompareIC::NUMBER) { |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1092 | __ JumpIfSmi(input, &ok); |
| 1093 | __ CheckMap(input, scratch, Heap::kHeapNumberMapRootIndex, fail, |
| 1094 | DONT_DO_SMI_CHECK); |
| 1095 | } |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1096 | // We could be strict about internalized/string here, but as long as |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1097 | // hydrogen doesn't care, the stub doesn't have to care either. |
| 1098 | __ bind(&ok); |
| 1099 | } |
| 1100 | |
| 1101 | |
| 1102 | // On entry a1 and a2 are the values to be compared. |
| 1103 | // On exit a0 is 0, positive or negative to indicate the result of |
| 1104 | // the comparison. |
| 1105 | void ICCompareStub::GenerateGeneric(MacroAssembler* masm) { |
| 1106 | Register lhs = a1; |
| 1107 | Register rhs = a0; |
| 1108 | Condition cc = GetCondition(); |
| 1109 | |
| 1110 | Label miss; |
| 1111 | ICCompareStub_CheckInputType(masm, lhs, a2, left_, &miss); |
| 1112 | ICCompareStub_CheckInputType(masm, rhs, a3, right_, &miss); |
| 1113 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1114 | Label slow; // Call builtin. |
| 1115 | Label not_smis, both_loaded_as_doubles; |
| 1116 | |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1117 | Label not_two_smis, smi_done; |
| 1118 | __ Or(a2, a1, a0); |
| 1119 | __ JumpIfNotSmi(a2, ¬_two_smis); |
| 1120 | __ sra(a1, a1, 1); |
| 1121 | __ sra(a0, a0, 1); |
| 1122 | __ Ret(USE_DELAY_SLOT); |
| 1123 | __ subu(v0, a1, a0); |
| 1124 | __ bind(¬_two_smis); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1125 | |
| 1126 | // NOTICE! This code is only reached after a smi-fast-case check, so |
| 1127 | // it is certain that at least one operand isn't a smi. |
| 1128 | |
| 1129 | // Handle the case where the objects are identical. Either returns the answer |
| 1130 | // or goes to slow. Only falls through if the objects were not identical. |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1131 | EmitIdenticalObjectComparison(masm, &slow, cc); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1132 | |
| 1133 | // If either is a Smi (we know that not both are), then they can only |
| 1134 | // be strictly equal if the other is a HeapNumber. |
| 1135 | STATIC_ASSERT(kSmiTag == 0); |
| 1136 | ASSERT_EQ(0, Smi::FromInt(0)); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1137 | __ And(t2, lhs, Operand(rhs)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1138 | __ JumpIfNotSmi(t2, ¬_smis, t0); |
| 1139 | // One operand is a smi. EmitSmiNonsmiComparison generates code that can: |
| 1140 | // 1) Return the answer. |
| 1141 | // 2) Go to slow. |
| 1142 | // 3) Fall through to both_loaded_as_doubles. |
| 1143 | // 4) Jump to rhs_not_nan. |
| 1144 | // In cases 3 and 4 we have found out we were dealing with a number-number |
| 1145 | // comparison and the numbers have been loaded into f12 and f14 as doubles, |
| 1146 | // or in GP registers (a0, a1, a2, a3) depending on the presence of the FPU. |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1147 | EmitSmiNonsmiComparison(masm, lhs, rhs, |
| 1148 | &both_loaded_as_doubles, &slow, strict()); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1149 | |
| 1150 | __ bind(&both_loaded_as_doubles); |
| 1151 | // f12, f14 are the double representations of the left hand side |
| 1152 | // and the right hand side if we have FPU. Otherwise a2, a3 represent |
| 1153 | // left hand side and a0, a1 represent right hand side. |
| 1154 | |
| 1155 | Isolate* isolate = masm->isolate(); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1156 | Label nan; |
| 1157 | __ li(t0, Operand(LESS)); |
| 1158 | __ li(t1, Operand(GREATER)); |
| 1159 | __ li(t2, Operand(EQUAL)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1160 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1161 | // Check if either rhs or lhs is NaN. |
| 1162 | __ BranchF(NULL, &nan, eq, f12, f14); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1163 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1164 | // Check if LESS condition is satisfied. If true, move conditionally |
| 1165 | // result to v0. |
| 1166 | __ c(OLT, D, f12, f14); |
| 1167 | __ Movt(v0, t0); |
| 1168 | // Use previous check to store conditionally to v0 oposite condition |
| 1169 | // (GREATER). If rhs is equal to lhs, this will be corrected in next |
| 1170 | // check. |
| 1171 | __ Movf(v0, t1); |
| 1172 | // Check if EQUAL condition is satisfied. If true, move conditionally |
| 1173 | // result to v0. |
| 1174 | __ c(EQ, D, f12, f14); |
| 1175 | __ Movt(v0, t2); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1176 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1177 | __ Ret(); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1178 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1179 | __ bind(&nan); |
| 1180 | // NaN comparisons always fail. |
| 1181 | // Load whatever we need in v0 to make the comparison fail. |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 1182 | ASSERT(is_int16(GREATER) && is_int16(LESS)); |
| 1183 | __ Ret(USE_DELAY_SLOT); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1184 | if (cc == lt || cc == le) { |
| 1185 | __ li(v0, Operand(GREATER)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1186 | } else { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1187 | __ li(v0, Operand(LESS)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1188 | } |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 1189 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1190 | |
| 1191 | __ bind(¬_smis); |
| 1192 | // At this point we know we are dealing with two different objects, |
| 1193 | // and neither of them is a Smi. The objects are in lhs_ and rhs_. |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1194 | if (strict()) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1195 | // This returns non-equal for some object types, or falls through if it |
| 1196 | // was not lucky. |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1197 | EmitStrictTwoHeapObjectCompare(masm, lhs, rhs); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1198 | } |
| 1199 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1200 | Label check_for_internalized_strings; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1201 | Label flat_string_check; |
| 1202 | // Check for heap-number-heap-number comparison. Can jump to slow case, |
| 1203 | // or load both doubles and jump to the code that handles |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1204 | // that case. If the inputs are not doubles then jumps to |
| 1205 | // check_for_internalized_strings. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1206 | // In this case a2 will contain the type of lhs_. |
| 1207 | EmitCheckForTwoHeapNumbers(masm, |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1208 | lhs, |
| 1209 | rhs, |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1210 | &both_loaded_as_doubles, |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1211 | &check_for_internalized_strings, |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1212 | &flat_string_check); |
| 1213 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1214 | __ bind(&check_for_internalized_strings); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1215 | if (cc == eq && !strict()) { |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1216 | // Returns an answer for two internalized strings or two |
| 1217 | // detectable objects. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1218 | // Otherwise jumps to string case or not both strings case. |
| 1219 | // Assumes that a2 is the type of lhs_ on entry. |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1220 | EmitCheckForInternalizedStringsOrObjects( |
| 1221 | masm, lhs, rhs, &flat_string_check, &slow); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1222 | } |
| 1223 | |
| 1224 | // Check for both being sequential ASCII strings, and inline if that is the |
| 1225 | // case. |
| 1226 | __ bind(&flat_string_check); |
| 1227 | |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1228 | __ JumpIfNonSmisNotBothSequentialAsciiStrings(lhs, rhs, a2, a3, &slow); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1229 | |
| 1230 | __ IncrementCounter(isolate->counters()->string_compare_native(), 1, a2, a3); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1231 | if (cc == eq) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1232 | StringCompareStub::GenerateFlatAsciiStringEquals(masm, |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1233 | lhs, |
| 1234 | rhs, |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1235 | a2, |
| 1236 | a3, |
| 1237 | t0); |
| 1238 | } else { |
| 1239 | StringCompareStub::GenerateCompareFlatAsciiStrings(masm, |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1240 | lhs, |
| 1241 | rhs, |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1242 | a2, |
| 1243 | a3, |
| 1244 | t0, |
| 1245 | t1); |
| 1246 | } |
| 1247 | // Never falls through to here. |
| 1248 | |
| 1249 | __ bind(&slow); |
| 1250 | // Prepare for call to builtin. Push object pointers, a0 (lhs) first, |
| 1251 | // a1 (rhs) second. |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1252 | __ Push(lhs, rhs); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1253 | // Figure out which native to call and setup the arguments. |
| 1254 | Builtins::JavaScript native; |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1255 | if (cc == eq) { |
| 1256 | native = strict() ? Builtins::STRICT_EQUALS : Builtins::EQUALS; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1257 | } else { |
| 1258 | native = Builtins::COMPARE; |
| 1259 | int ncr; // NaN compare result. |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1260 | if (cc == lt || cc == le) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1261 | ncr = GREATER; |
| 1262 | } else { |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1263 | ASSERT(cc == gt || cc == ge); // Remaining cases. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1264 | ncr = LESS; |
| 1265 | } |
| 1266 | __ li(a0, Operand(Smi::FromInt(ncr))); |
| 1267 | __ push(a0); |
| 1268 | } |
| 1269 | |
| 1270 | // Call the native; it returns -1 (less), 0 (equal), or 1 (greater) |
| 1271 | // tagged as a small integer. |
| 1272 | __ InvokeBuiltin(native, JUMP_FUNCTION); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 1273 | |
| 1274 | __ bind(&miss); |
| 1275 | GenerateMiss(masm); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1276 | } |
| 1277 | |
| 1278 | |
yangguo@chromium.org | 4954674 | 2013-12-23 16:17:49 +0000 | [diff] [blame] | 1279 | void StoreRegistersStateStub::Generate(MacroAssembler* masm) { |
| 1280 | __ mov(t9, ra); |
| 1281 | __ pop(ra); |
| 1282 | if (save_doubles_ == kSaveFPRegs) { |
| 1283 | __ PushSafepointRegistersAndDoubles(); |
| 1284 | } else { |
| 1285 | __ PushSafepointRegisters(); |
| 1286 | } |
| 1287 | __ Jump(t9); |
| 1288 | } |
| 1289 | |
| 1290 | |
| 1291 | void RestoreRegistersStateStub::Generate(MacroAssembler* masm) { |
| 1292 | __ mov(t9, ra); |
| 1293 | __ pop(ra); |
| 1294 | __ StoreToSafepointRegisterSlot(t9, t9); |
| 1295 | if (save_doubles_ == kSaveFPRegs) { |
| 1296 | __ PopSafepointRegistersAndDoubles(); |
| 1297 | } else { |
| 1298 | __ PopSafepointRegisters(); |
| 1299 | } |
| 1300 | __ Jump(t9); |
| 1301 | } |
| 1302 | |
| 1303 | |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1304 | void StoreBufferOverflowStub::Generate(MacroAssembler* masm) { |
| 1305 | // We don't allow a GC during a store buffer overflow so there is no need to |
| 1306 | // store the registers in any particular way, but we do have to store and |
| 1307 | // restore them. |
| 1308 | __ MultiPush(kJSCallerSaved | ra.bit()); |
| 1309 | if (save_doubles_ == kSaveFPRegs) { |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1310 | __ MultiPushFPU(kCallerSavedFPU); |
| 1311 | } |
| 1312 | const int argument_count = 1; |
| 1313 | const int fp_argument_count = 0; |
| 1314 | const Register scratch = a1; |
| 1315 | |
| 1316 | AllowExternalCallThatCantCauseGC scope(masm); |
| 1317 | __ PrepareCallCFunction(argument_count, fp_argument_count, scratch); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1318 | __ li(a0, Operand(ExternalReference::isolate_address(masm->isolate()))); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1319 | __ CallCFunction( |
| 1320 | ExternalReference::store_buffer_overflow_function(masm->isolate()), |
| 1321 | argument_count); |
| 1322 | if (save_doubles_ == kSaveFPRegs) { |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1323 | __ MultiPopFPU(kCallerSavedFPU); |
| 1324 | } |
| 1325 | |
| 1326 | __ MultiPop(kJSCallerSaved | ra.bit()); |
| 1327 | __ Ret(); |
| 1328 | } |
| 1329 | |
| 1330 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1331 | void MathPowStub::Generate(MacroAssembler* masm) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1332 | const Register base = a1; |
| 1333 | const Register exponent = a2; |
| 1334 | const Register heapnumbermap = t1; |
| 1335 | const Register heapnumber = v0; |
| 1336 | const DoubleRegister double_base = f2; |
| 1337 | const DoubleRegister double_exponent = f4; |
| 1338 | const DoubleRegister double_result = f0; |
| 1339 | const DoubleRegister double_scratch = f6; |
| 1340 | const FPURegister single_scratch = f8; |
| 1341 | const Register scratch = t5; |
| 1342 | const Register scratch2 = t3; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1343 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 1344 | Label call_runtime, done, int_exponent; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1345 | if (exponent_type_ == ON_STACK) { |
| 1346 | Label base_is_smi, unpack_exponent; |
| 1347 | // The exponent and base are supplied as arguments on the stack. |
| 1348 | // This can only happen if the stub is called from non-optimized code. |
| 1349 | // Load input parameters from stack to double registers. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1350 | __ lw(base, MemOperand(sp, 1 * kPointerSize)); |
| 1351 | __ lw(exponent, MemOperand(sp, 0 * kPointerSize)); |
| 1352 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1353 | __ LoadRoot(heapnumbermap, Heap::kHeapNumberMapRootIndex); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1354 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 1355 | __ UntagAndJumpIfSmi(scratch, base, &base_is_smi); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1356 | __ lw(scratch, FieldMemOperand(base, JSObject::kMapOffset)); |
| 1357 | __ Branch(&call_runtime, ne, scratch, Operand(heapnumbermap)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1358 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1359 | __ ldc1(double_base, FieldMemOperand(base, HeapNumber::kValueOffset)); |
| 1360 | __ jmp(&unpack_exponent); |
| 1361 | |
| 1362 | __ bind(&base_is_smi); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 1363 | __ mtc1(scratch, single_scratch); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1364 | __ cvt_d_w(double_base, single_scratch); |
| 1365 | __ bind(&unpack_exponent); |
| 1366 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 1367 | __ UntagAndJumpIfSmi(scratch, exponent, &int_exponent); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1368 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1369 | __ lw(scratch, FieldMemOperand(exponent, JSObject::kMapOffset)); |
| 1370 | __ Branch(&call_runtime, ne, scratch, Operand(heapnumbermap)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1371 | __ ldc1(double_exponent, |
| 1372 | FieldMemOperand(exponent, HeapNumber::kValueOffset)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1373 | } else if (exponent_type_ == TAGGED) { |
| 1374 | // Base is already in double_base. |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 1375 | __ UntagAndJumpIfSmi(scratch, exponent, &int_exponent); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1376 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1377 | __ ldc1(double_exponent, |
| 1378 | FieldMemOperand(exponent, HeapNumber::kValueOffset)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1379 | } |
| 1380 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1381 | if (exponent_type_ != INTEGER) { |
| 1382 | Label int_exponent_convert; |
| 1383 | // Detect integer exponents stored as double. |
| 1384 | __ EmitFPUTruncate(kRoundToMinusInf, |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1385 | scratch, |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 1386 | double_exponent, |
| 1387 | at, |
| 1388 | double_scratch, |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1389 | scratch2, |
| 1390 | kCheckForInexactConversion); |
| 1391 | // scratch2 == 0 means there was no conversion error. |
| 1392 | __ Branch(&int_exponent_convert, eq, scratch2, Operand(zero_reg)); |
| 1393 | |
| 1394 | if (exponent_type_ == ON_STACK) { |
| 1395 | // Detect square root case. Crankshaft detects constant +/-0.5 at |
| 1396 | // compile time and uses DoMathPowHalf instead. We then skip this check |
| 1397 | // for non-constant cases of +/-0.5 as these hardly occur. |
| 1398 | Label not_plus_half; |
| 1399 | |
| 1400 | // Test for 0.5. |
| 1401 | __ Move(double_scratch, 0.5); |
| 1402 | __ BranchF(USE_DELAY_SLOT, |
| 1403 | ¬_plus_half, |
| 1404 | NULL, |
| 1405 | ne, |
| 1406 | double_exponent, |
| 1407 | double_scratch); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 1408 | // double_scratch can be overwritten in the delay slot. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1409 | // Calculates square root of base. Check for the special case of |
| 1410 | // Math.pow(-Infinity, 0.5) == Infinity (ECMA spec, 15.8.2.13). |
| 1411 | __ Move(double_scratch, -V8_INFINITY); |
| 1412 | __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, double_base, double_scratch); |
| 1413 | __ neg_d(double_result, double_scratch); |
| 1414 | |
| 1415 | // Add +0 to convert -0 to +0. |
| 1416 | __ add_d(double_scratch, double_base, kDoubleRegZero); |
| 1417 | __ sqrt_d(double_result, double_scratch); |
| 1418 | __ jmp(&done); |
| 1419 | |
| 1420 | __ bind(¬_plus_half); |
| 1421 | __ Move(double_scratch, -0.5); |
| 1422 | __ BranchF(USE_DELAY_SLOT, |
| 1423 | &call_runtime, |
| 1424 | NULL, |
| 1425 | ne, |
| 1426 | double_exponent, |
| 1427 | double_scratch); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 1428 | // double_scratch can be overwritten in the delay slot. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1429 | // Calculates square root of base. Check for the special case of |
| 1430 | // Math.pow(-Infinity, -0.5) == 0 (ECMA spec, 15.8.2.13). |
| 1431 | __ Move(double_scratch, -V8_INFINITY); |
| 1432 | __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, double_base, double_scratch); |
| 1433 | __ Move(double_result, kDoubleRegZero); |
| 1434 | |
| 1435 | // Add +0 to convert -0 to +0. |
| 1436 | __ add_d(double_scratch, double_base, kDoubleRegZero); |
| 1437 | __ Move(double_result, 1); |
| 1438 | __ sqrt_d(double_scratch, double_scratch); |
| 1439 | __ div_d(double_result, double_result, double_scratch); |
| 1440 | __ jmp(&done); |
| 1441 | } |
| 1442 | |
| 1443 | __ push(ra); |
| 1444 | { |
| 1445 | AllowExternalCallThatCantCauseGC scope(masm); |
svenpanne@chromium.org | 83130cf | 2012-11-30 10:13:25 +0000 | [diff] [blame] | 1446 | __ PrepareCallCFunction(0, 2, scratch2); |
machenbach@chromium.org | 4ddd2f1 | 2014-01-14 08:13:44 +0000 | [diff] [blame] | 1447 | __ MovToFloatParameters(double_base, double_exponent); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1448 | __ CallCFunction( |
| 1449 | ExternalReference::power_double_double_function(masm->isolate()), |
| 1450 | 0, 2); |
| 1451 | } |
| 1452 | __ pop(ra); |
machenbach@chromium.org | 4ddd2f1 | 2014-01-14 08:13:44 +0000 | [diff] [blame] | 1453 | __ MovFromFloatResult(double_result); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1454 | __ jmp(&done); |
| 1455 | |
| 1456 | __ bind(&int_exponent_convert); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1457 | } |
| 1458 | |
| 1459 | // Calculate power with integer exponent. |
| 1460 | __ bind(&int_exponent); |
| 1461 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 1462 | // Get two copies of exponent in the registers scratch and exponent. |
| 1463 | if (exponent_type_ == INTEGER) { |
| 1464 | __ mov(scratch, exponent); |
| 1465 | } else { |
| 1466 | // Exponent has previously been stored into scratch as untagged integer. |
| 1467 | __ mov(exponent, scratch); |
| 1468 | } |
| 1469 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1470 | __ mov_d(double_scratch, double_base); // Back up base. |
| 1471 | __ Move(double_result, 1.0); |
| 1472 | |
| 1473 | // Get absolute value of exponent. |
| 1474 | Label positive_exponent; |
| 1475 | __ Branch(&positive_exponent, ge, scratch, Operand(zero_reg)); |
| 1476 | __ Subu(scratch, zero_reg, scratch); |
| 1477 | __ bind(&positive_exponent); |
| 1478 | |
| 1479 | Label while_true, no_carry, loop_end; |
| 1480 | __ bind(&while_true); |
| 1481 | |
| 1482 | __ And(scratch2, scratch, 1); |
| 1483 | |
| 1484 | __ Branch(&no_carry, eq, scratch2, Operand(zero_reg)); |
| 1485 | __ mul_d(double_result, double_result, double_scratch); |
| 1486 | __ bind(&no_carry); |
| 1487 | |
| 1488 | __ sra(scratch, scratch, 1); |
| 1489 | |
| 1490 | __ Branch(&loop_end, eq, scratch, Operand(zero_reg)); |
| 1491 | __ mul_d(double_scratch, double_scratch, double_scratch); |
| 1492 | |
| 1493 | __ Branch(&while_true); |
| 1494 | |
| 1495 | __ bind(&loop_end); |
| 1496 | |
| 1497 | __ Branch(&done, ge, exponent, Operand(zero_reg)); |
| 1498 | __ Move(double_scratch, 1.0); |
| 1499 | __ div_d(double_result, double_scratch, double_result); |
| 1500 | // Test whether result is zero. Bail out to check for subnormal result. |
| 1501 | // Due to subnormals, x^-y == (1/x)^y does not hold in all cases. |
| 1502 | __ BranchF(&done, NULL, ne, double_result, kDoubleRegZero); |
| 1503 | |
| 1504 | // double_exponent may not contain the exponent value if the input was a |
| 1505 | // smi. We set it with exponent value before bailing out. |
| 1506 | __ mtc1(exponent, single_scratch); |
| 1507 | __ cvt_d_w(double_exponent, single_scratch); |
| 1508 | |
| 1509 | // Returning or bailing out. |
| 1510 | Counters* counters = masm->isolate()->counters(); |
| 1511 | if (exponent_type_ == ON_STACK) { |
| 1512 | // The arguments are still on the stack. |
| 1513 | __ bind(&call_runtime); |
machenbach@chromium.org | 2f599e5 | 2014-03-31 14:24:38 +0000 | [diff] [blame] | 1514 | __ TailCallRuntime(Runtime::kHiddenMathPow, 2, 1); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1515 | |
| 1516 | // The stub is called from non-optimized code, which expects the result |
| 1517 | // as heap number in exponent. |
| 1518 | __ bind(&done); |
| 1519 | __ AllocateHeapNumber( |
| 1520 | heapnumber, scratch, scratch2, heapnumbermap, &call_runtime); |
| 1521 | __ sdc1(double_result, |
| 1522 | FieldMemOperand(heapnumber, HeapNumber::kValueOffset)); |
| 1523 | ASSERT(heapnumber.is(v0)); |
| 1524 | __ IncrementCounter(counters->math_pow(), 1, scratch, scratch2); |
| 1525 | __ DropAndRet(2); |
| 1526 | } else { |
| 1527 | __ push(ra); |
| 1528 | { |
| 1529 | AllowExternalCallThatCantCauseGC scope(masm); |
| 1530 | __ PrepareCallCFunction(0, 2, scratch); |
machenbach@chromium.org | 4ddd2f1 | 2014-01-14 08:13:44 +0000 | [diff] [blame] | 1531 | __ MovToFloatParameters(double_base, double_exponent); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1532 | __ CallCFunction( |
| 1533 | ExternalReference::power_double_double_function(masm->isolate()), |
| 1534 | 0, 2); |
| 1535 | } |
| 1536 | __ pop(ra); |
machenbach@chromium.org | 4ddd2f1 | 2014-01-14 08:13:44 +0000 | [diff] [blame] | 1537 | __ MovFromFloatResult(double_result); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1538 | |
| 1539 | __ bind(&done); |
| 1540 | __ IncrementCounter(counters->math_pow(), 1, scratch, scratch2); |
| 1541 | __ Ret(); |
| 1542 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1543 | } |
| 1544 | |
| 1545 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1546 | bool CEntryStub::NeedsImmovableCode() { |
| 1547 | return true; |
| 1548 | } |
| 1549 | |
| 1550 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1551 | void CodeStub::GenerateStubsAheadOfTime(Isolate* isolate) { |
| 1552 | CEntryStub::GenerateAheadOfTime(isolate); |
| 1553 | WriteInt32ToHeapNumberStub::GenerateFixedRegStubsAheadOfTime(isolate); |
| 1554 | StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(isolate); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1555 | StubFailureTrampolineStub::GenerateAheadOfTime(isolate); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 1556 | ArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate); |
danno@chromium.org | bee5199 | 2013-07-10 14:57:15 +0000 | [diff] [blame] | 1557 | CreateAllocationSiteStub::GenerateAheadOfTime(isolate); |
machenbach@chromium.org | ce9c514 | 2013-12-03 08:00:39 +0000 | [diff] [blame] | 1558 | BinaryOpICStub::GenerateAheadOfTime(isolate); |
yangguo@chromium.org | 4954674 | 2013-12-23 16:17:49 +0000 | [diff] [blame] | 1559 | StoreRegistersStateStub::GenerateAheadOfTime(isolate); |
| 1560 | RestoreRegistersStateStub::GenerateAheadOfTime(isolate); |
ulan@chromium.org | 0f13e74 | 2014-01-03 15:51:11 +0000 | [diff] [blame] | 1561 | BinaryOpICWithAllocationSiteStub::GenerateAheadOfTime(isolate); |
yangguo@chromium.org | 4954674 | 2013-12-23 16:17:49 +0000 | [diff] [blame] | 1562 | } |
| 1563 | |
| 1564 | |
| 1565 | void StoreRegistersStateStub::GenerateAheadOfTime( |
| 1566 | Isolate* isolate) { |
| 1567 | StoreRegistersStateStub stub1(kDontSaveFPRegs); |
| 1568 | stub1.GetCode(isolate); |
| 1569 | // Hydrogen code stubs need stub2 at snapshot time. |
| 1570 | StoreRegistersStateStub stub2(kSaveFPRegs); |
| 1571 | stub2.GetCode(isolate); |
| 1572 | } |
| 1573 | |
| 1574 | |
| 1575 | void RestoreRegistersStateStub::GenerateAheadOfTime( |
| 1576 | Isolate* isolate) { |
| 1577 | RestoreRegistersStateStub stub1(kDontSaveFPRegs); |
| 1578 | stub1.GetCode(isolate); |
| 1579 | // Hydrogen code stubs need stub2 at snapshot time. |
| 1580 | RestoreRegistersStateStub stub2(kSaveFPRegs); |
| 1581 | stub2.GetCode(isolate); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1582 | } |
| 1583 | |
| 1584 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1585 | void CodeStub::GenerateFPStubs(Isolate* isolate) { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1586 | SaveFPRegsMode mode = kSaveFPRegs; |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1587 | CEntryStub save_doubles(1, mode); |
| 1588 | StoreBufferOverflowStub stub(mode); |
| 1589 | // These stubs might already be in the snapshot, detect that and don't |
| 1590 | // regenerate, which would lead to code stub initialization state being messed |
| 1591 | // up. |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1592 | Code* save_doubles_code; |
| 1593 | if (!save_doubles.FindCodeInCache(&save_doubles_code, isolate)) { |
| 1594 | save_doubles_code = *save_doubles.GetCode(isolate); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1595 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1596 | Code* store_buffer_overflow_code; |
| 1597 | if (!stub.FindCodeInCache(&store_buffer_overflow_code, isolate)) { |
| 1598 | store_buffer_overflow_code = *stub.GetCode(isolate); |
| 1599 | } |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 1600 | isolate->set_fp_stubs_generated(true); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1601 | } |
| 1602 | |
| 1603 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1604 | void CEntryStub::GenerateAheadOfTime(Isolate* isolate) { |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1605 | CEntryStub stub(1, kDontSaveFPRegs); |
machenbach@chromium.org | ce9c514 | 2013-12-03 08:00:39 +0000 | [diff] [blame] | 1606 | stub.GetCode(isolate); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1607 | } |
| 1608 | |
| 1609 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1610 | void CEntryStub::GenerateCore(MacroAssembler* masm, |
| 1611 | Label* throw_normal_exception, |
| 1612 | Label* throw_termination_exception, |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1613 | bool do_gc, |
| 1614 | bool always_allocate) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1615 | // v0: result parameter for PerformGC, if any |
| 1616 | // s0: number of arguments including receiver (C callee-saved) |
| 1617 | // s1: pointer to the first argument (C callee-saved) |
| 1618 | // s2: pointer to builtin function (C callee-saved) |
| 1619 | |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1620 | Isolate* isolate = masm->isolate(); |
| 1621 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1622 | if (do_gc) { |
| 1623 | // Move result passed in v0 into a0 to call PerformGC. |
| 1624 | __ mov(a0, v0); |
machenbach@chromium.org | 528ce02 | 2013-09-23 14:09:36 +0000 | [diff] [blame] | 1625 | __ PrepareCallCFunction(2, 0, a1); |
| 1626 | __ li(a1, Operand(ExternalReference::isolate_address(masm->isolate()))); |
| 1627 | __ CallCFunction(ExternalReference::perform_gc_function(isolate), 2, 0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1628 | } |
| 1629 | |
| 1630 | ExternalReference scope_depth = |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1631 | ExternalReference::heap_always_allocate_scope_depth(isolate); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1632 | if (always_allocate) { |
| 1633 | __ li(a0, Operand(scope_depth)); |
| 1634 | __ lw(a1, MemOperand(a0)); |
| 1635 | __ Addu(a1, a1, Operand(1)); |
| 1636 | __ sw(a1, MemOperand(a0)); |
| 1637 | } |
| 1638 | |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 1639 | // Prepare arguments for C routine. |
| 1640 | // a0 = argc |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1641 | __ mov(a0, s0); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 1642 | // a1 = argv (set in the delay slot after find_ra below). |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1643 | |
| 1644 | // We are calling compiled C/C++ code. a0 and a1 hold our two arguments. We |
| 1645 | // also need to reserve the 4 argument slots on the stack. |
| 1646 | |
| 1647 | __ AssertStackIsAligned(); |
| 1648 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1649 | __ li(a2, Operand(ExternalReference::isolate_address(isolate))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1650 | |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1651 | // To let the GC traverse the return address of the exit frames, we need to |
| 1652 | // know where the return address is. The CEntryStub is unmovable, so |
| 1653 | // we can store the address on the stack to be able to find it again and |
| 1654 | // we never have to restore it, because it will not change. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1655 | { Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm); |
| 1656 | // This branch-and-link sequence is needed to find the current PC on mips, |
| 1657 | // saved to the ra register. |
| 1658 | // Use masm-> here instead of the double-underscore macro since extra |
| 1659 | // coverage code can interfere with the proper calculation of ra. |
| 1660 | Label find_ra; |
| 1661 | masm->bal(&find_ra); // bal exposes branch delay slot. |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 1662 | masm->mov(a1, s1); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1663 | masm->bind(&find_ra); |
| 1664 | |
| 1665 | // Adjust the value in ra to point to the correct return location, 2nd |
| 1666 | // instruction past the real call into C code (the jalr(t9)), and push it. |
| 1667 | // This is the return address of the exit frame. |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 1668 | const int kNumInstructionsToJump = 5; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1669 | masm->Addu(ra, ra, kNumInstructionsToJump * kPointerSize); |
| 1670 | masm->sw(ra, MemOperand(sp)); // This spot was reserved in EnterExitFrame. |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 1671 | // Stack space reservation moved to the branch delay slot below. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1672 | // Stack is still aligned. |
| 1673 | |
| 1674 | // Call the C routine. |
| 1675 | masm->mov(t9, s2); // Function pointer to t9 to conform to ABI for PIC. |
| 1676 | masm->jalr(t9); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 1677 | // Set up sp in the delay slot. |
| 1678 | masm->addiu(sp, sp, -kCArgsSlotsSize); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1679 | // Make sure the stored 'ra' points to this position. |
| 1680 | ASSERT_EQ(kNumInstructionsToJump, |
| 1681 | masm->InstructionsGeneratedSince(&find_ra)); |
| 1682 | } |
| 1683 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1684 | if (always_allocate) { |
| 1685 | // It's okay to clobber a2 and a3 here. v0 & v1 contain result. |
| 1686 | __ li(a2, Operand(scope_depth)); |
| 1687 | __ lw(a3, MemOperand(a2)); |
| 1688 | __ Subu(a3, a3, Operand(1)); |
| 1689 | __ sw(a3, MemOperand(a2)); |
| 1690 | } |
| 1691 | |
| 1692 | // Check for failure result. |
| 1693 | Label failure_returned; |
| 1694 | STATIC_ASSERT(((kFailureTag + 1) & kFailureTagMask) == 0); |
| 1695 | __ addiu(a2, v0, 1); |
| 1696 | __ andi(t0, a2, kFailureTagMask); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 1697 | __ Branch(USE_DELAY_SLOT, &failure_returned, eq, t0, Operand(zero_reg)); |
| 1698 | // Restore stack (remove arg slots) in branch delay slot. |
| 1699 | __ addiu(sp, sp, kCArgsSlotsSize); |
| 1700 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1701 | |
| 1702 | // Exit C frame and return. |
| 1703 | // v0:v1: result |
| 1704 | // sp: stack pointer |
| 1705 | // fp: frame pointer |
machenbach@chromium.org | 528ce02 | 2013-09-23 14:09:36 +0000 | [diff] [blame] | 1706 | __ LeaveExitFrame(save_doubles_, s0, true, EMIT_RETURN); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1707 | |
| 1708 | // Check if we should retry or throw exception. |
| 1709 | Label retry; |
| 1710 | __ bind(&failure_returned); |
| 1711 | STATIC_ASSERT(Failure::RETRY_AFTER_GC == 0); |
| 1712 | __ andi(t0, v0, ((1 << kFailureTypeTagSize) - 1) << kFailureTagSize); |
| 1713 | __ Branch(&retry, eq, t0, Operand(zero_reg)); |
| 1714 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1715 | // Retrieve the pending exception. |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 1716 | __ li(t0, Operand(ExternalReference(Isolate::kPendingExceptionAddress, |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1717 | isolate))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1718 | __ lw(v0, MemOperand(t0)); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1719 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1720 | // Clear the pending exception. |
| 1721 | __ li(a3, Operand(isolate->factory()->the_hole_value())); |
| 1722 | __ li(t0, Operand(ExternalReference(Isolate::kPendingExceptionAddress, |
| 1723 | isolate))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1724 | __ sw(a3, MemOperand(t0)); |
| 1725 | |
| 1726 | // Special handling of termination exceptions which are uncatchable |
| 1727 | // by javascript code. |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 1728 | __ LoadRoot(t0, Heap::kTerminationExceptionRootIndex); |
| 1729 | __ Branch(throw_termination_exception, eq, v0, Operand(t0)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1730 | |
| 1731 | // Handle normal exception. |
| 1732 | __ jmp(throw_normal_exception); |
| 1733 | |
| 1734 | __ bind(&retry); |
| 1735 | // Last failure (v0) will be moved to (a0) for parameter when retrying. |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1736 | } |
| 1737 | |
| 1738 | |
| 1739 | void CEntryStub::Generate(MacroAssembler* masm) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1740 | // Called from JavaScript; parameters are on stack as if calling JS function |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 1741 | // s0: number of arguments including receiver |
| 1742 | // s1: size of arguments excluding receiver |
| 1743 | // s2: pointer to builtin function |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1744 | // fp: frame pointer (restored after C call) |
| 1745 | // sp: stack pointer (restored as callee's sp after C call) |
| 1746 | // cp: current context (C callee-saved) |
| 1747 | |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 1748 | ProfileEntryHookStub::MaybeCallEntryHook(masm); |
| 1749 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1750 | // NOTE: Invocations of builtins may return failure objects |
| 1751 | // instead of a proper result. The builtin entry handles |
| 1752 | // this by performing a garbage collection and retrying the |
| 1753 | // builtin once. |
| 1754 | |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 1755 | // NOTE: s0-s2 hold the arguments of this function instead of a0-a2. |
| 1756 | // The reason for this is that these arguments would need to be saved anyway |
| 1757 | // so it's faster to set them up directly. |
| 1758 | // See MacroAssembler::PrepareCEntryArgs and PrepareCEntryFunction. |
| 1759 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1760 | // Compute the argv pointer in a callee-saved register. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1761 | __ Addu(s1, sp, s1); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1762 | |
| 1763 | // Enter the exit frame that transitions from JavaScript to C++. |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1764 | FrameScope scope(masm, StackFrame::MANUAL); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1765 | __ EnterExitFrame(save_doubles_); |
| 1766 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1767 | // s0: number of arguments (C callee-saved) |
| 1768 | // s1: pointer to first argument (C callee-saved) |
| 1769 | // s2: pointer to builtin function (C callee-saved) |
| 1770 | |
| 1771 | Label throw_normal_exception; |
| 1772 | Label throw_termination_exception; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1773 | |
| 1774 | // Call into the runtime system. |
| 1775 | GenerateCore(masm, |
| 1776 | &throw_normal_exception, |
| 1777 | &throw_termination_exception, |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1778 | false, |
| 1779 | false); |
| 1780 | |
| 1781 | // Do space-specific GC and retry runtime call. |
| 1782 | GenerateCore(masm, |
| 1783 | &throw_normal_exception, |
| 1784 | &throw_termination_exception, |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1785 | true, |
| 1786 | false); |
| 1787 | |
| 1788 | // Do full GC and retry runtime call one final time. |
| 1789 | Failure* failure = Failure::InternalError(); |
| 1790 | __ li(v0, Operand(reinterpret_cast<int32_t>(failure))); |
| 1791 | GenerateCore(masm, |
| 1792 | &throw_normal_exception, |
| 1793 | &throw_termination_exception, |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1794 | true, |
| 1795 | true); |
| 1796 | |
svenpanne@chromium.org | a87904f | 2014-03-27 14:14:22 +0000 | [diff] [blame] | 1797 | { FrameScope scope(masm, StackFrame::MANUAL); |
| 1798 | __ PrepareCallCFunction(0, v0); |
| 1799 | __ CallCFunction( |
| 1800 | ExternalReference::out_of_memory_function(masm->isolate()), 0); |
| 1801 | } |
| 1802 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1803 | __ bind(&throw_termination_exception); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1804 | __ ThrowUncatchable(v0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1805 | |
| 1806 | __ bind(&throw_normal_exception); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1807 | __ Throw(v0); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1808 | } |
| 1809 | |
| 1810 | |
| 1811 | void JSEntryStub::GenerateBody(MacroAssembler* masm, bool is_construct) { |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 1812 | Label invoke, handler_entry, exit; |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1813 | Isolate* isolate = masm->isolate(); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1814 | |
| 1815 | // Registers: |
| 1816 | // a0: entry address |
| 1817 | // a1: function |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 1818 | // a2: receiver |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1819 | // a3: argc |
| 1820 | // |
| 1821 | // Stack: |
| 1822 | // 4 args slots |
| 1823 | // args |
| 1824 | |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 1825 | ProfileEntryHookStub::MaybeCallEntryHook(masm); |
| 1826 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1827 | // Save callee saved registers on the stack. |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 1828 | __ MultiPush(kCalleeSaved | ra.bit()); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1829 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1830 | // Save callee-saved FPU registers. |
| 1831 | __ MultiPushFPU(kCalleeSavedFPU); |
| 1832 | // Set up the reserved register for 0.0. |
| 1833 | __ Move(kDoubleRegZero, 0.0); |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 1834 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1835 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1836 | // Load argv in s0 register. |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 1837 | int offset_to_argv = (kNumCalleeSaved + 1) * kPointerSize; |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1838 | offset_to_argv += kNumCalleeSavedFPU * kDoubleSize; |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 1839 | |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 1840 | __ InitializeRootRegister(); |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 1841 | __ lw(s0, MemOperand(sp, offset_to_argv + kCArgsSlotsSize)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1842 | |
| 1843 | // We build an EntryFrame. |
| 1844 | __ li(t3, Operand(-1)); // Push a bad frame pointer to fail if it is used. |
| 1845 | int marker = is_construct ? StackFrame::ENTRY_CONSTRUCT : StackFrame::ENTRY; |
| 1846 | __ li(t2, Operand(Smi::FromInt(marker))); |
| 1847 | __ li(t1, Operand(Smi::FromInt(marker))); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 1848 | __ li(t0, Operand(ExternalReference(Isolate::kCEntryFPAddress, |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1849 | isolate))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1850 | __ lw(t0, MemOperand(t0)); |
| 1851 | __ Push(t3, t2, t1, t0); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 1852 | // Set up frame pointer for the frame to be pushed. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1853 | __ addiu(fp, sp, -EntryFrameConstants::kCallerFPOffset); |
| 1854 | |
| 1855 | // Registers: |
| 1856 | // a0: entry_address |
| 1857 | // a1: function |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 1858 | // a2: receiver_pointer |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1859 | // a3: argc |
| 1860 | // s0: argv |
| 1861 | // |
| 1862 | // Stack: |
| 1863 | // caller fp | |
| 1864 | // function slot | entry frame |
| 1865 | // context slot | |
| 1866 | // bad fp (0xff...f) | |
| 1867 | // callee saved registers + ra |
| 1868 | // 4 args slots |
| 1869 | // args |
| 1870 | |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 1871 | // If this is the outermost JS call, set js_entry_sp value. |
| 1872 | Label non_outermost_js; |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1873 | ExternalReference js_entry_sp(Isolate::kJSEntrySPAddress, isolate); |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 1874 | __ li(t1, Operand(ExternalReference(js_entry_sp))); |
| 1875 | __ lw(t2, MemOperand(t1)); |
| 1876 | __ Branch(&non_outermost_js, ne, t2, Operand(zero_reg)); |
| 1877 | __ sw(fp, MemOperand(t1)); |
| 1878 | __ li(t0, Operand(Smi::FromInt(StackFrame::OUTERMOST_JSENTRY_FRAME))); |
| 1879 | Label cont; |
| 1880 | __ b(&cont); |
| 1881 | __ nop(); // Branch delay slot nop. |
| 1882 | __ bind(&non_outermost_js); |
| 1883 | __ li(t0, Operand(Smi::FromInt(StackFrame::INNER_JSENTRY_FRAME))); |
| 1884 | __ bind(&cont); |
| 1885 | __ push(t0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1886 | |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 1887 | // Jump to a faked try block that does the invoke, with a faked catch |
| 1888 | // block that sets the pending exception. |
| 1889 | __ jmp(&invoke); |
| 1890 | __ bind(&handler_entry); |
| 1891 | handler_offset_ = handler_entry.pos(); |
| 1892 | // Caught exception: Store result (exception) in the pending exception |
| 1893 | // field in the JSEnv and return a failure sentinel. Coming in here the |
| 1894 | // fp will be invalid because the PushTryHandler below sets it to 0 to |
| 1895 | // signal the existence of the JSEntry frame. |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 1896 | __ li(t0, Operand(ExternalReference(Isolate::kPendingExceptionAddress, |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1897 | isolate))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1898 | __ sw(v0, MemOperand(t0)); // We come back from 'invoke'. result is in v0. |
| 1899 | __ li(v0, Operand(reinterpret_cast<int32_t>(Failure::Exception()))); |
| 1900 | __ b(&exit); // b exposes branch delay slot. |
| 1901 | __ nop(); // Branch delay slot nop. |
| 1902 | |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 1903 | // Invoke: Link this frame into the handler chain. There's only one |
| 1904 | // handler block in this code object, so its index is 0. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1905 | __ bind(&invoke); |
yangguo@chromium.org | 78d1ad4 | 2012-02-09 13:53:47 +0000 | [diff] [blame] | 1906 | __ PushTryHandler(StackHandler::JS_ENTRY, 0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1907 | // If an exception not caught by another handler occurs, this handler |
| 1908 | // returns control to the code after the bal(&invoke) above, which |
| 1909 | // restores all kCalleeSaved registers (including cp and fp) to their |
| 1910 | // saved values before returning a failure to C. |
| 1911 | |
| 1912 | // Clear any pending exceptions. |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 1913 | __ LoadRoot(t1, Heap::kTheHoleValueRootIndex); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 1914 | __ li(t0, Operand(ExternalReference(Isolate::kPendingExceptionAddress, |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1915 | isolate))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1916 | __ sw(t1, MemOperand(t0)); |
| 1917 | |
| 1918 | // Invoke the function by calling through JS entry trampoline builtin. |
| 1919 | // Notice that we cannot store a reference to the trampoline code directly in |
| 1920 | // this stub, because runtime stubs are not traversed when doing GC. |
| 1921 | |
| 1922 | // Registers: |
| 1923 | // a0: entry_address |
| 1924 | // a1: function |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 1925 | // a2: receiver_pointer |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1926 | // a3: argc |
| 1927 | // s0: argv |
| 1928 | // |
| 1929 | // Stack: |
| 1930 | // handler frame |
| 1931 | // entry frame |
| 1932 | // callee saved registers + ra |
| 1933 | // 4 args slots |
| 1934 | // args |
| 1935 | |
| 1936 | if (is_construct) { |
| 1937 | ExternalReference construct_entry(Builtins::kJSConstructEntryTrampoline, |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1938 | isolate); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1939 | __ li(t0, Operand(construct_entry)); |
| 1940 | } else { |
| 1941 | ExternalReference entry(Builtins::kJSEntryTrampoline, masm->isolate()); |
| 1942 | __ li(t0, Operand(entry)); |
| 1943 | } |
| 1944 | __ lw(t9, MemOperand(t0)); // Deref address. |
| 1945 | |
| 1946 | // Call JSEntryTrampoline. |
| 1947 | __ addiu(t9, t9, Code::kHeaderSize - kHeapObjectTag); |
| 1948 | __ Call(t9); |
| 1949 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1950 | // Unlink this frame from the handler chain. |
| 1951 | __ PopTryHandler(); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1952 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1953 | __ bind(&exit); // v0 holds result |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 1954 | // Check if the current stack frame is marked as the outermost JS frame. |
| 1955 | Label non_outermost_js_2; |
| 1956 | __ pop(t1); |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 1957 | __ Branch(&non_outermost_js_2, |
| 1958 | ne, |
| 1959 | t1, |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 1960 | Operand(Smi::FromInt(StackFrame::OUTERMOST_JSENTRY_FRAME))); |
| 1961 | __ li(t1, Operand(ExternalReference(js_entry_sp))); |
| 1962 | __ sw(zero_reg, MemOperand(t1)); |
| 1963 | __ bind(&non_outermost_js_2); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1964 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1965 | // Restore the top frame descriptors from the stack. |
| 1966 | __ pop(t1); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 1967 | __ li(t0, Operand(ExternalReference(Isolate::kCEntryFPAddress, |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1968 | isolate))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1969 | __ sw(t1, MemOperand(t0)); |
| 1970 | |
| 1971 | // Reset the stack to the callee saved registers. |
| 1972 | __ addiu(sp, sp, -EntryFrameConstants::kCallerFPOffset); |
| 1973 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1974 | // Restore callee-saved fpu registers. |
| 1975 | __ MultiPopFPU(kCalleeSavedFPU); |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 1976 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1977 | // Restore callee saved registers from the stack. |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 1978 | __ MultiPop(kCalleeSaved | ra.bit()); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1979 | // Return. |
| 1980 | __ Jump(ra); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1981 | } |
| 1982 | |
| 1983 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1984 | // Uses registers a0 to t0. |
| 1985 | // Expected input (depending on whether args are in registers or on the stack): |
| 1986 | // * object: a0 or at sp + 1 * kPointerSize. |
| 1987 | // * function: a1 or at sp. |
| 1988 | // |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1989 | // An inlined call site may have been generated before calling this stub. |
| 1990 | // In this case the offset to the inline site to patch is passed on the stack, |
| 1991 | // in the safepoint slot for register t0. |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1992 | void InstanceofStub::Generate(MacroAssembler* masm) { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1993 | // Call site inlining and patching implies arguments in registers. |
| 1994 | ASSERT(HasArgsInRegisters() || !HasCallSiteInlineCheck()); |
| 1995 | // ReturnTrueFalse is only implemented for inlined call sites. |
| 1996 | ASSERT(!ReturnTrueFalseObject() || HasCallSiteInlineCheck()); |
| 1997 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1998 | // Fixed register usage throughout the stub: |
| 1999 | const Register object = a0; // Object (lhs). |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2000 | Register map = a3; // Map of the object. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2001 | const Register function = a1; // Function (rhs). |
| 2002 | const Register prototype = t0; // Prototype of the function. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2003 | const Register inline_site = t5; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2004 | const Register scratch = a2; |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2005 | |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 2006 | const int32_t kDeltaToLoadBoolResult = 5 * kPointerSize; |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2007 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2008 | Label slow, loop, is_instance, is_not_instance, not_js_object; |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2009 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2010 | if (!HasArgsInRegisters()) { |
| 2011 | __ lw(object, MemOperand(sp, 1 * kPointerSize)); |
| 2012 | __ lw(function, MemOperand(sp, 0)); |
| 2013 | } |
| 2014 | |
| 2015 | // Check that the left hand is a JS object and load map. |
| 2016 | __ JumpIfSmi(object, ¬_js_object); |
| 2017 | __ IsObjectJSObjectType(object, map, scratch, ¬_js_object); |
| 2018 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2019 | // If there is a call site cache don't look in the global cache, but do the |
| 2020 | // real lookup and update the call site cache. |
| 2021 | if (!HasCallSiteInlineCheck()) { |
| 2022 | Label miss; |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2023 | __ LoadRoot(at, Heap::kInstanceofCacheFunctionRootIndex); |
| 2024 | __ Branch(&miss, ne, function, Operand(at)); |
| 2025 | __ LoadRoot(at, Heap::kInstanceofCacheMapRootIndex); |
| 2026 | __ Branch(&miss, ne, map, Operand(at)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2027 | __ LoadRoot(v0, Heap::kInstanceofCacheAnswerRootIndex); |
| 2028 | __ DropAndRet(HasArgsInRegisters() ? 0 : 2); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2029 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2030 | __ bind(&miss); |
| 2031 | } |
| 2032 | |
| 2033 | // Get the prototype of the function. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2034 | __ TryGetFunctionPrototype(function, prototype, scratch, &slow, true); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2035 | |
| 2036 | // Check that the function prototype is a JS object. |
| 2037 | __ JumpIfSmi(prototype, &slow); |
| 2038 | __ IsObjectJSObjectType(prototype, scratch, scratch, &slow); |
| 2039 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2040 | // Update the global instanceof or call site inlined cache with the current |
| 2041 | // map and function. The cached answer will be set when it is known below. |
| 2042 | if (!HasCallSiteInlineCheck()) { |
| 2043 | __ StoreRoot(function, Heap::kInstanceofCacheFunctionRootIndex); |
| 2044 | __ StoreRoot(map, Heap::kInstanceofCacheMapRootIndex); |
| 2045 | } else { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2046 | ASSERT(HasArgsInRegisters()); |
| 2047 | // Patch the (relocated) inlined map check. |
| 2048 | |
| 2049 | // The offset was stored in t0 safepoint slot. |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 2050 | // (See LCodeGen::DoDeferredLInstanceOfKnownGlobal). |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2051 | __ LoadFromSafepointRegisterSlot(scratch, t0); |
| 2052 | __ Subu(inline_site, ra, scratch); |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 2053 | // Get the map location in scratch and patch it. |
| 2054 | __ GetRelocatedValue(inline_site, scratch, v1); // v1 used as scratch. |
danno@chromium.org | f95d4b9 | 2013-06-13 14:40:17 +0000 | [diff] [blame] | 2055 | __ sw(map, FieldMemOperand(scratch, Cell::kValueOffset)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2056 | } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2057 | |
| 2058 | // Register mapping: a3 is object map and t0 is function prototype. |
| 2059 | // Get prototype of object into a2. |
| 2060 | __ lw(scratch, FieldMemOperand(map, Map::kPrototypeOffset)); |
| 2061 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2062 | // We don't need map any more. Use it as a scratch register. |
| 2063 | Register scratch2 = map; |
| 2064 | map = no_reg; |
| 2065 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2066 | // Loop through the prototype chain looking for the function prototype. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2067 | __ LoadRoot(scratch2, Heap::kNullValueRootIndex); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2068 | __ bind(&loop); |
| 2069 | __ Branch(&is_instance, eq, scratch, Operand(prototype)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2070 | __ Branch(&is_not_instance, eq, scratch, Operand(scratch2)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2071 | __ lw(scratch, FieldMemOperand(scratch, HeapObject::kMapOffset)); |
| 2072 | __ lw(scratch, FieldMemOperand(scratch, Map::kPrototypeOffset)); |
| 2073 | __ Branch(&loop); |
| 2074 | |
| 2075 | __ bind(&is_instance); |
| 2076 | ASSERT(Smi::FromInt(0) == 0); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2077 | if (!HasCallSiteInlineCheck()) { |
| 2078 | __ mov(v0, zero_reg); |
| 2079 | __ StoreRoot(v0, Heap::kInstanceofCacheAnswerRootIndex); |
| 2080 | } else { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2081 | // Patch the call site to return true. |
| 2082 | __ LoadRoot(v0, Heap::kTrueValueRootIndex); |
| 2083 | __ Addu(inline_site, inline_site, Operand(kDeltaToLoadBoolResult)); |
| 2084 | // Get the boolean result location in scratch and patch it. |
| 2085 | __ PatchRelocatedValue(inline_site, scratch, v0); |
| 2086 | |
| 2087 | if (!ReturnTrueFalseObject()) { |
| 2088 | ASSERT_EQ(Smi::FromInt(0), 0); |
| 2089 | __ mov(v0, zero_reg); |
| 2090 | } |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2091 | } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2092 | __ DropAndRet(HasArgsInRegisters() ? 0 : 2); |
| 2093 | |
| 2094 | __ bind(&is_not_instance); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2095 | if (!HasCallSiteInlineCheck()) { |
| 2096 | __ li(v0, Operand(Smi::FromInt(1))); |
| 2097 | __ StoreRoot(v0, Heap::kInstanceofCacheAnswerRootIndex); |
| 2098 | } else { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2099 | // Patch the call site to return false. |
| 2100 | __ LoadRoot(v0, Heap::kFalseValueRootIndex); |
| 2101 | __ Addu(inline_site, inline_site, Operand(kDeltaToLoadBoolResult)); |
| 2102 | // Get the boolean result location in scratch and patch it. |
| 2103 | __ PatchRelocatedValue(inline_site, scratch, v0); |
| 2104 | |
| 2105 | if (!ReturnTrueFalseObject()) { |
| 2106 | __ li(v0, Operand(Smi::FromInt(1))); |
| 2107 | } |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2108 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2109 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2110 | __ DropAndRet(HasArgsInRegisters() ? 0 : 2); |
| 2111 | |
| 2112 | Label object_not_null, object_not_null_or_smi; |
| 2113 | __ bind(¬_js_object); |
| 2114 | // Before null, smi and string value checks, check that the rhs is a function |
| 2115 | // as for a non-function rhs an exception needs to be thrown. |
| 2116 | __ JumpIfSmi(function, &slow); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2117 | __ GetObjectType(function, scratch2, scratch); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2118 | __ Branch(&slow, ne, scratch, Operand(JS_FUNCTION_TYPE)); |
| 2119 | |
| 2120 | // Null is not instance of anything. |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 2121 | __ Branch(&object_not_null, |
| 2122 | ne, |
| 2123 | scratch, |
| 2124 | Operand(masm->isolate()->factory()->null_value())); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2125 | __ li(v0, Operand(Smi::FromInt(1))); |
| 2126 | __ DropAndRet(HasArgsInRegisters() ? 0 : 2); |
| 2127 | |
| 2128 | __ bind(&object_not_null); |
| 2129 | // Smi values are not instances of anything. |
| 2130 | __ JumpIfNotSmi(object, &object_not_null_or_smi); |
| 2131 | __ li(v0, Operand(Smi::FromInt(1))); |
| 2132 | __ DropAndRet(HasArgsInRegisters() ? 0 : 2); |
| 2133 | |
| 2134 | __ bind(&object_not_null_or_smi); |
| 2135 | // String values are not instances of anything. |
| 2136 | __ IsObjectJSStringType(object, scratch, &slow); |
| 2137 | __ li(v0, Operand(Smi::FromInt(1))); |
| 2138 | __ DropAndRet(HasArgsInRegisters() ? 0 : 2); |
| 2139 | |
| 2140 | // Slow-case. Tail call builtin. |
| 2141 | __ bind(&slow); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2142 | if (!ReturnTrueFalseObject()) { |
| 2143 | if (HasArgsInRegisters()) { |
| 2144 | __ Push(a0, a1); |
| 2145 | } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2146 | __ InvokeBuiltin(Builtins::INSTANCE_OF, JUMP_FUNCTION); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2147 | } else { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2148 | { |
| 2149 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 2150 | __ Push(a0, a1); |
| 2151 | __ InvokeBuiltin(Builtins::INSTANCE_OF, CALL_FUNCTION); |
| 2152 | } |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2153 | __ mov(a0, v0); |
| 2154 | __ LoadRoot(v0, Heap::kTrueValueRootIndex); |
| 2155 | __ DropAndRet(HasArgsInRegisters() ? 0 : 2, eq, a0, Operand(zero_reg)); |
| 2156 | __ LoadRoot(v0, Heap::kFalseValueRootIndex); |
| 2157 | __ DropAndRet(HasArgsInRegisters() ? 0 : 2); |
| 2158 | } |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2159 | } |
| 2160 | |
| 2161 | |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 2162 | void FunctionPrototypeStub::Generate(MacroAssembler* masm) { |
| 2163 | Label miss; |
| 2164 | Register receiver; |
| 2165 | if (kind() == Code::KEYED_LOAD_IC) { |
| 2166 | // ----------- S t a t e ------------- |
| 2167 | // -- ra : return address |
| 2168 | // -- a0 : key |
| 2169 | // -- a1 : receiver |
| 2170 | // ----------------------------------- |
| 2171 | __ Branch(&miss, ne, a0, |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 2172 | Operand(masm->isolate()->factory()->prototype_string())); |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 2173 | receiver = a1; |
| 2174 | } else { |
| 2175 | ASSERT(kind() == Code::LOAD_IC); |
| 2176 | // ----------- S t a t e ------------- |
| 2177 | // -- a2 : name |
| 2178 | // -- ra : return address |
| 2179 | // -- a0 : receiver |
| 2180 | // -- sp[0] : receiver |
| 2181 | // ----------------------------------- |
| 2182 | receiver = a0; |
| 2183 | } |
| 2184 | |
| 2185 | StubCompiler::GenerateLoadFunctionPrototype(masm, receiver, a3, t0, &miss); |
| 2186 | __ bind(&miss); |
danno@chromium.org | bee5199 | 2013-07-10 14:57:15 +0000 | [diff] [blame] | 2187 | StubCompiler::TailCallBuiltin( |
| 2188 | masm, BaseLoadStoreStubCompiler::MissBuiltin(kind())); |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 2189 | } |
| 2190 | |
| 2191 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2192 | Register InstanceofStub::left() { return a0; } |
| 2193 | |
| 2194 | |
| 2195 | Register InstanceofStub::right() { return a1; } |
| 2196 | |
| 2197 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2198 | void ArgumentsAccessStub::GenerateReadElement(MacroAssembler* masm) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2199 | // The displacement is the offset of the last parameter (if any) |
| 2200 | // relative to the frame pointer. |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 2201 | const int kDisplacement = |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2202 | StandardFrameConstants::kCallerSPOffset - kPointerSize; |
| 2203 | |
| 2204 | // Check that the key is a smiGenerateReadElement. |
| 2205 | Label slow; |
| 2206 | __ JumpIfNotSmi(a1, &slow); |
| 2207 | |
| 2208 | // Check if the calling frame is an arguments adaptor frame. |
| 2209 | Label adaptor; |
| 2210 | __ lw(a2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 2211 | __ lw(a3, MemOperand(a2, StandardFrameConstants::kContextOffset)); |
| 2212 | __ Branch(&adaptor, |
| 2213 | eq, |
| 2214 | a3, |
| 2215 | Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 2216 | |
| 2217 | // Check index (a1) against formal parameters count limit passed in |
| 2218 | // through register a0. Use unsigned comparison to get negative |
| 2219 | // check for free. |
| 2220 | __ Branch(&slow, hs, a1, Operand(a0)); |
| 2221 | |
| 2222 | // Read the argument from the stack and return it. |
| 2223 | __ subu(a3, a0, a1); |
| 2224 | __ sll(t3, a3, kPointerSizeLog2 - kSmiTagSize); |
| 2225 | __ Addu(a3, fp, Operand(t3)); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 2226 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2227 | __ lw(v0, MemOperand(a3, kDisplacement)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2228 | |
| 2229 | // Arguments adaptor case: Check index (a1) against actual arguments |
| 2230 | // limit found in the arguments adaptor frame. Use unsigned |
| 2231 | // comparison to get negative check for free. |
| 2232 | __ bind(&adaptor); |
| 2233 | __ lw(a0, MemOperand(a2, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 2234 | __ Branch(&slow, Ugreater_equal, a1, Operand(a0)); |
| 2235 | |
| 2236 | // Read the argument from the adaptor frame and return it. |
| 2237 | __ subu(a3, a0, a1); |
| 2238 | __ sll(t3, a3, kPointerSizeLog2 - kSmiTagSize); |
| 2239 | __ Addu(a3, a2, Operand(t3)); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 2240 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2241 | __ lw(v0, MemOperand(a3, kDisplacement)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2242 | |
| 2243 | // Slow-case: Handle non-smi or out-of-bounds access to arguments |
| 2244 | // by calling the runtime system. |
| 2245 | __ bind(&slow); |
| 2246 | __ push(a1); |
| 2247 | __ TailCallRuntime(Runtime::kGetArgumentsProperty, 1, 1); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2248 | } |
| 2249 | |
| 2250 | |
dslomov@chromium.org | 486536d | 2014-03-12 13:09:18 +0000 | [diff] [blame] | 2251 | void ArgumentsAccessStub::GenerateNewSloppySlow(MacroAssembler* masm) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2252 | // sp[0] : number of parameters |
| 2253 | // sp[4] : receiver displacement |
| 2254 | // sp[8] : function |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2255 | // Check if the calling frame is an arguments adaptor frame. |
| 2256 | Label runtime; |
| 2257 | __ lw(a3, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 2258 | __ lw(a2, MemOperand(a3, StandardFrameConstants::kContextOffset)); |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 2259 | __ Branch(&runtime, |
| 2260 | ne, |
| 2261 | a2, |
| 2262 | Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2263 | |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2264 | // Patch the arguments.length and the parameters pointer in the current frame. |
| 2265 | __ lw(a2, MemOperand(a3, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 2266 | __ sw(a2, MemOperand(sp, 0 * kPointerSize)); |
| 2267 | __ sll(t3, a2, 1); |
| 2268 | __ Addu(a3, a3, Operand(t3)); |
| 2269 | __ addiu(a3, a3, StandardFrameConstants::kCallerSPOffset); |
| 2270 | __ sw(a3, MemOperand(sp, 1 * kPointerSize)); |
| 2271 | |
| 2272 | __ bind(&runtime); |
machenbach@chromium.org | 895f00d | 2014-03-27 01:04:43 +0000 | [diff] [blame] | 2273 | __ TailCallRuntime(Runtime::kHiddenNewArgumentsFast, 3, 1); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2274 | } |
| 2275 | |
| 2276 | |
dslomov@chromium.org | 486536d | 2014-03-12 13:09:18 +0000 | [diff] [blame] | 2277 | void ArgumentsAccessStub::GenerateNewSloppyFast(MacroAssembler* masm) { |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2278 | // Stack layout: |
| 2279 | // sp[0] : number of parameters (tagged) |
| 2280 | // sp[4] : address of receiver argument |
| 2281 | // sp[8] : function |
| 2282 | // Registers used over whole function: |
| 2283 | // t2 : allocated object (tagged) |
| 2284 | // t5 : mapped parameter count (tagged) |
| 2285 | |
| 2286 | __ lw(a1, MemOperand(sp, 0 * kPointerSize)); |
| 2287 | // a1 = parameter count (tagged) |
| 2288 | |
| 2289 | // Check if the calling frame is an arguments adaptor frame. |
| 2290 | Label runtime; |
| 2291 | Label adaptor_frame, try_allocate; |
| 2292 | __ lw(a3, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 2293 | __ lw(a2, MemOperand(a3, StandardFrameConstants::kContextOffset)); |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 2294 | __ Branch(&adaptor_frame, |
| 2295 | eq, |
| 2296 | a2, |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2297 | Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 2298 | |
| 2299 | // No adaptor, parameter count = argument count. |
| 2300 | __ mov(a2, a1); |
| 2301 | __ b(&try_allocate); |
| 2302 | __ nop(); // Branch delay slot nop. |
| 2303 | |
| 2304 | // We have an adaptor frame. Patch the parameters pointer. |
| 2305 | __ bind(&adaptor_frame); |
| 2306 | __ lw(a2, MemOperand(a3, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 2307 | __ sll(t6, a2, 1); |
| 2308 | __ Addu(a3, a3, Operand(t6)); |
| 2309 | __ Addu(a3, a3, Operand(StandardFrameConstants::kCallerSPOffset)); |
| 2310 | __ sw(a3, MemOperand(sp, 1 * kPointerSize)); |
| 2311 | |
| 2312 | // a1 = parameter count (tagged) |
| 2313 | // a2 = argument count (tagged) |
| 2314 | // Compute the mapped parameter count = min(a1, a2) in a1. |
| 2315 | Label skip_min; |
| 2316 | __ Branch(&skip_min, lt, a1, Operand(a2)); |
| 2317 | __ mov(a1, a2); |
| 2318 | __ bind(&skip_min); |
| 2319 | |
| 2320 | __ bind(&try_allocate); |
| 2321 | |
| 2322 | // Compute the sizes of backing store, parameter map, and arguments object. |
| 2323 | // 1. Parameter map, has 2 extra words containing context and backing store. |
| 2324 | const int kParameterMapHeaderSize = |
| 2325 | FixedArray::kHeaderSize + 2 * kPointerSize; |
| 2326 | // If there are no mapped parameters, we do not need the parameter_map. |
| 2327 | Label param_map_size; |
| 2328 | ASSERT_EQ(0, Smi::FromInt(0)); |
| 2329 | __ Branch(USE_DELAY_SLOT, ¶m_map_size, eq, a1, Operand(zero_reg)); |
| 2330 | __ mov(t5, zero_reg); // In delay slot: param map size = 0 when a1 == 0. |
| 2331 | __ sll(t5, a1, 1); |
| 2332 | __ addiu(t5, t5, kParameterMapHeaderSize); |
| 2333 | __ bind(¶m_map_size); |
| 2334 | |
| 2335 | // 2. Backing store. |
| 2336 | __ sll(t6, a2, 1); |
| 2337 | __ Addu(t5, t5, Operand(t6)); |
| 2338 | __ Addu(t5, t5, Operand(FixedArray::kHeaderSize)); |
| 2339 | |
| 2340 | // 3. Arguments object. |
dslomov@chromium.org | 486536d | 2014-03-12 13:09:18 +0000 | [diff] [blame] | 2341 | __ Addu(t5, t5, Operand(Heap::kSloppyArgumentsObjectSize)); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2342 | |
| 2343 | // Do the allocation of all three objects in one go. |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 2344 | __ Allocate(t5, v0, a3, t0, &runtime, TAG_OBJECT); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2345 | |
| 2346 | // v0 = address of new object(s) (tagged) |
| 2347 | // a2 = argument count (tagged) |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 2348 | // Get the arguments boilerplate from the current native context into t0. |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2349 | const int kNormalOffset = |
dslomov@chromium.org | 486536d | 2014-03-12 13:09:18 +0000 | [diff] [blame] | 2350 | Context::SlotOffset(Context::SLOPPY_ARGUMENTS_BOILERPLATE_INDEX); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2351 | const int kAliasedOffset = |
| 2352 | Context::SlotOffset(Context::ALIASED_ARGUMENTS_BOILERPLATE_INDEX); |
| 2353 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 2354 | __ lw(t0, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
| 2355 | __ lw(t0, FieldMemOperand(t0, GlobalObject::kNativeContextOffset)); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2356 | Label skip2_ne, skip2_eq; |
| 2357 | __ Branch(&skip2_ne, ne, a1, Operand(zero_reg)); |
| 2358 | __ lw(t0, MemOperand(t0, kNormalOffset)); |
| 2359 | __ bind(&skip2_ne); |
| 2360 | |
| 2361 | __ Branch(&skip2_eq, eq, a1, Operand(zero_reg)); |
| 2362 | __ lw(t0, MemOperand(t0, kAliasedOffset)); |
| 2363 | __ bind(&skip2_eq); |
| 2364 | |
| 2365 | // v0 = address of new object (tagged) |
| 2366 | // a1 = mapped parameter count (tagged) |
| 2367 | // a2 = argument count (tagged) |
| 2368 | // t0 = address of boilerplate object (tagged) |
| 2369 | // Copy the JS object part. |
| 2370 | for (int i = 0; i < JSObject::kHeaderSize; i += kPointerSize) { |
| 2371 | __ lw(a3, FieldMemOperand(t0, i)); |
| 2372 | __ sw(a3, FieldMemOperand(v0, i)); |
| 2373 | } |
| 2374 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2375 | // Set up the callee in-object property. |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2376 | STATIC_ASSERT(Heap::kArgumentsCalleeIndex == 1); |
| 2377 | __ lw(a3, MemOperand(sp, 2 * kPointerSize)); |
| 2378 | const int kCalleeOffset = JSObject::kHeaderSize + |
| 2379 | Heap::kArgumentsCalleeIndex * kPointerSize; |
| 2380 | __ sw(a3, FieldMemOperand(v0, kCalleeOffset)); |
| 2381 | |
| 2382 | // Use the length (smi tagged) and set that as an in-object property too. |
| 2383 | STATIC_ASSERT(Heap::kArgumentsLengthIndex == 0); |
| 2384 | const int kLengthOffset = JSObject::kHeaderSize + |
| 2385 | Heap::kArgumentsLengthIndex * kPointerSize; |
| 2386 | __ sw(a2, FieldMemOperand(v0, kLengthOffset)); |
| 2387 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2388 | // Set up the elements pointer in the allocated arguments object. |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2389 | // If we allocated a parameter map, t0 will point there, otherwise |
| 2390 | // it will point to the backing store. |
dslomov@chromium.org | 486536d | 2014-03-12 13:09:18 +0000 | [diff] [blame] | 2391 | __ Addu(t0, v0, Operand(Heap::kSloppyArgumentsObjectSize)); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2392 | __ sw(t0, FieldMemOperand(v0, JSObject::kElementsOffset)); |
| 2393 | |
| 2394 | // v0 = address of new object (tagged) |
| 2395 | // a1 = mapped parameter count (tagged) |
| 2396 | // a2 = argument count (tagged) |
| 2397 | // t0 = address of parameter map or backing store (tagged) |
| 2398 | // Initialize parameter map. If there are no mapped arguments, we're done. |
| 2399 | Label skip_parameter_map; |
| 2400 | Label skip3; |
| 2401 | __ Branch(&skip3, ne, a1, Operand(Smi::FromInt(0))); |
| 2402 | // Move backing store address to a3, because it is |
| 2403 | // expected there when filling in the unmapped arguments. |
| 2404 | __ mov(a3, t0); |
| 2405 | __ bind(&skip3); |
| 2406 | |
| 2407 | __ Branch(&skip_parameter_map, eq, a1, Operand(Smi::FromInt(0))); |
| 2408 | |
dslomov@chromium.org | 486536d | 2014-03-12 13:09:18 +0000 | [diff] [blame] | 2409 | __ LoadRoot(t2, Heap::kSloppyArgumentsElementsMapRootIndex); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2410 | __ sw(t2, FieldMemOperand(t0, FixedArray::kMapOffset)); |
| 2411 | __ Addu(t2, a1, Operand(Smi::FromInt(2))); |
| 2412 | __ sw(t2, FieldMemOperand(t0, FixedArray::kLengthOffset)); |
| 2413 | __ sw(cp, FieldMemOperand(t0, FixedArray::kHeaderSize + 0 * kPointerSize)); |
| 2414 | __ sll(t6, a1, 1); |
| 2415 | __ Addu(t2, t0, Operand(t6)); |
| 2416 | __ Addu(t2, t2, Operand(kParameterMapHeaderSize)); |
| 2417 | __ sw(t2, FieldMemOperand(t0, FixedArray::kHeaderSize + 1 * kPointerSize)); |
| 2418 | |
| 2419 | // Copy the parameter slots and the holes in the arguments. |
| 2420 | // We need to fill in mapped_parameter_count slots. They index the context, |
| 2421 | // where parameters are stored in reverse order, at |
| 2422 | // MIN_CONTEXT_SLOTS .. MIN_CONTEXT_SLOTS+parameter_count-1 |
| 2423 | // The mapped parameter thus need to get indices |
| 2424 | // MIN_CONTEXT_SLOTS+parameter_count-1 .. |
| 2425 | // MIN_CONTEXT_SLOTS+parameter_count-mapped_parameter_count |
| 2426 | // We loop from right to left. |
| 2427 | Label parameters_loop, parameters_test; |
| 2428 | __ mov(t2, a1); |
| 2429 | __ lw(t5, MemOperand(sp, 0 * kPointerSize)); |
| 2430 | __ Addu(t5, t5, Operand(Smi::FromInt(Context::MIN_CONTEXT_SLOTS))); |
| 2431 | __ Subu(t5, t5, Operand(a1)); |
| 2432 | __ LoadRoot(t3, Heap::kTheHoleValueRootIndex); |
| 2433 | __ sll(t6, t2, 1); |
| 2434 | __ Addu(a3, t0, Operand(t6)); |
| 2435 | __ Addu(a3, a3, Operand(kParameterMapHeaderSize)); |
| 2436 | |
| 2437 | // t2 = loop variable (tagged) |
| 2438 | // a1 = mapping index (tagged) |
| 2439 | // a3 = address of backing store (tagged) |
| 2440 | // t0 = address of parameter map (tagged) |
| 2441 | // t1 = temporary scratch (a.o., for address calculation) |
| 2442 | // t3 = the hole value |
| 2443 | __ jmp(¶meters_test); |
| 2444 | |
| 2445 | __ bind(¶meters_loop); |
| 2446 | __ Subu(t2, t2, Operand(Smi::FromInt(1))); |
| 2447 | __ sll(t1, t2, 1); |
| 2448 | __ Addu(t1, t1, Operand(kParameterMapHeaderSize - kHeapObjectTag)); |
| 2449 | __ Addu(t6, t0, t1); |
| 2450 | __ sw(t5, MemOperand(t6)); |
| 2451 | __ Subu(t1, t1, Operand(kParameterMapHeaderSize - FixedArray::kHeaderSize)); |
| 2452 | __ Addu(t6, a3, t1); |
| 2453 | __ sw(t3, MemOperand(t6)); |
| 2454 | __ Addu(t5, t5, Operand(Smi::FromInt(1))); |
| 2455 | __ bind(¶meters_test); |
| 2456 | __ Branch(¶meters_loop, ne, t2, Operand(Smi::FromInt(0))); |
| 2457 | |
| 2458 | __ bind(&skip_parameter_map); |
| 2459 | // a2 = argument count (tagged) |
| 2460 | // a3 = address of backing store (tagged) |
| 2461 | // t1 = scratch |
| 2462 | // Copy arguments header and remaining slots (if there are any). |
| 2463 | __ LoadRoot(t1, Heap::kFixedArrayMapRootIndex); |
| 2464 | __ sw(t1, FieldMemOperand(a3, FixedArray::kMapOffset)); |
| 2465 | __ sw(a2, FieldMemOperand(a3, FixedArray::kLengthOffset)); |
| 2466 | |
| 2467 | Label arguments_loop, arguments_test; |
| 2468 | __ mov(t5, a1); |
| 2469 | __ lw(t0, MemOperand(sp, 1 * kPointerSize)); |
| 2470 | __ sll(t6, t5, 1); |
| 2471 | __ Subu(t0, t0, Operand(t6)); |
| 2472 | __ jmp(&arguments_test); |
| 2473 | |
| 2474 | __ bind(&arguments_loop); |
| 2475 | __ Subu(t0, t0, Operand(kPointerSize)); |
| 2476 | __ lw(t2, MemOperand(t0, 0)); |
| 2477 | __ sll(t6, t5, 1); |
| 2478 | __ Addu(t1, a3, Operand(t6)); |
| 2479 | __ sw(t2, FieldMemOperand(t1, FixedArray::kHeaderSize)); |
| 2480 | __ Addu(t5, t5, Operand(Smi::FromInt(1))); |
| 2481 | |
| 2482 | __ bind(&arguments_test); |
| 2483 | __ Branch(&arguments_loop, lt, t5, Operand(a2)); |
| 2484 | |
| 2485 | // Return and remove the on-stack parameters. |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 2486 | __ DropAndRet(3); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2487 | |
| 2488 | // Do the runtime call to allocate the arguments object. |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2489 | // a2 = argument count (tagged) |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2490 | __ bind(&runtime); |
| 2491 | __ sw(a2, MemOperand(sp, 0 * kPointerSize)); // Patch argument count. |
machenbach@chromium.org | 895f00d | 2014-03-27 01:04:43 +0000 | [diff] [blame] | 2492 | __ TailCallRuntime(Runtime::kHiddenNewArgumentsFast, 3, 1); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2493 | } |
| 2494 | |
| 2495 | |
| 2496 | void ArgumentsAccessStub::GenerateNewStrict(MacroAssembler* masm) { |
| 2497 | // sp[0] : number of parameters |
| 2498 | // sp[4] : receiver displacement |
| 2499 | // sp[8] : function |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2500 | // Check if the calling frame is an arguments adaptor frame. |
| 2501 | Label adaptor_frame, try_allocate, runtime; |
| 2502 | __ lw(a2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 2503 | __ lw(a3, MemOperand(a2, StandardFrameConstants::kContextOffset)); |
| 2504 | __ Branch(&adaptor_frame, |
| 2505 | eq, |
| 2506 | a3, |
| 2507 | Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 2508 | |
| 2509 | // Get the length from the frame. |
| 2510 | __ lw(a1, MemOperand(sp, 0)); |
| 2511 | __ Branch(&try_allocate); |
| 2512 | |
| 2513 | // Patch the arguments.length and the parameters pointer. |
| 2514 | __ bind(&adaptor_frame); |
| 2515 | __ lw(a1, MemOperand(a2, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 2516 | __ sw(a1, MemOperand(sp, 0)); |
| 2517 | __ sll(at, a1, kPointerSizeLog2 - kSmiTagSize); |
| 2518 | __ Addu(a3, a2, Operand(at)); |
| 2519 | |
| 2520 | __ Addu(a3, a3, Operand(StandardFrameConstants::kCallerSPOffset)); |
| 2521 | __ sw(a3, MemOperand(sp, 1 * kPointerSize)); |
| 2522 | |
| 2523 | // Try the new space allocation. Start out with computing the size |
| 2524 | // of the arguments object and the elements array in words. |
| 2525 | Label add_arguments_object; |
| 2526 | __ bind(&try_allocate); |
| 2527 | __ Branch(&add_arguments_object, eq, a1, Operand(zero_reg)); |
| 2528 | __ srl(a1, a1, kSmiTagSize); |
| 2529 | |
| 2530 | __ Addu(a1, a1, Operand(FixedArray::kHeaderSize / kPointerSize)); |
| 2531 | __ bind(&add_arguments_object); |
dslomov@chromium.org | 486536d | 2014-03-12 13:09:18 +0000 | [diff] [blame] | 2532 | __ Addu(a1, a1, Operand(Heap::kStrictArgumentsObjectSize / kPointerSize)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2533 | |
| 2534 | // Do the allocation of both objects in one go. |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 2535 | __ Allocate(a1, v0, a2, a3, &runtime, |
| 2536 | static_cast<AllocationFlags>(TAG_OBJECT | SIZE_IN_WORDS)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2537 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 2538 | // Get the arguments boilerplate from the current native context. |
| 2539 | __ lw(t0, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
| 2540 | __ lw(t0, FieldMemOperand(t0, GlobalObject::kNativeContextOffset)); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2541 | __ lw(t0, MemOperand(t0, Context::SlotOffset( |
dslomov@chromium.org | 486536d | 2014-03-12 13:09:18 +0000 | [diff] [blame] | 2542 | Context::STRICT_ARGUMENTS_BOILERPLATE_INDEX))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2543 | |
| 2544 | // Copy the JS object part. |
| 2545 | __ CopyFields(v0, t0, a3.bit(), JSObject::kHeaderSize / kPointerSize); |
| 2546 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2547 | // Get the length (smi tagged) and set that as an in-object property too. |
| 2548 | STATIC_ASSERT(Heap::kArgumentsLengthIndex == 0); |
| 2549 | __ lw(a1, MemOperand(sp, 0 * kPointerSize)); |
| 2550 | __ sw(a1, FieldMemOperand(v0, JSObject::kHeaderSize + |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2551 | Heap::kArgumentsLengthIndex * kPointerSize)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2552 | |
| 2553 | Label done; |
| 2554 | __ Branch(&done, eq, a1, Operand(zero_reg)); |
| 2555 | |
| 2556 | // Get the parameters pointer from the stack. |
| 2557 | __ lw(a2, MemOperand(sp, 1 * kPointerSize)); |
| 2558 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2559 | // Set up the elements pointer in the allocated arguments object and |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2560 | // initialize the header in the elements fixed array. |
dslomov@chromium.org | 486536d | 2014-03-12 13:09:18 +0000 | [diff] [blame] | 2561 | __ Addu(t0, v0, Operand(Heap::kStrictArgumentsObjectSize)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2562 | __ sw(t0, FieldMemOperand(v0, JSObject::kElementsOffset)); |
| 2563 | __ LoadRoot(a3, Heap::kFixedArrayMapRootIndex); |
| 2564 | __ sw(a3, FieldMemOperand(t0, FixedArray::kMapOffset)); |
| 2565 | __ sw(a1, FieldMemOperand(t0, FixedArray::kLengthOffset)); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 2566 | // Untag the length for the loop. |
| 2567 | __ srl(a1, a1, kSmiTagSize); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2568 | |
| 2569 | // Copy the fixed array slots. |
| 2570 | Label loop; |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2571 | // Set up t0 to point to the first array slot. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2572 | __ Addu(t0, t0, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 2573 | __ bind(&loop); |
| 2574 | // Pre-decrement a2 with kPointerSize on each iteration. |
| 2575 | // Pre-decrement in order to skip receiver. |
| 2576 | __ Addu(a2, a2, Operand(-kPointerSize)); |
| 2577 | __ lw(a3, MemOperand(a2)); |
| 2578 | // Post-increment t0 with kPointerSize on each iteration. |
| 2579 | __ sw(a3, MemOperand(t0)); |
| 2580 | __ Addu(t0, t0, Operand(kPointerSize)); |
| 2581 | __ Subu(a1, a1, Operand(1)); |
| 2582 | __ Branch(&loop, ne, a1, Operand(zero_reg)); |
| 2583 | |
| 2584 | // Return and remove the on-stack parameters. |
| 2585 | __ bind(&done); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 2586 | __ DropAndRet(3); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2587 | |
| 2588 | // Do the runtime call to allocate the arguments object. |
| 2589 | __ bind(&runtime); |
machenbach@chromium.org | 895f00d | 2014-03-27 01:04:43 +0000 | [diff] [blame] | 2590 | __ TailCallRuntime(Runtime::kHiddenNewStrictArgumentsFast, 3, 1); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2591 | } |
| 2592 | |
| 2593 | |
| 2594 | void RegExpExecStub::Generate(MacroAssembler* masm) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2595 | // Just jump directly to runtime if native RegExp is not selected at compile |
| 2596 | // time or if regexp entry in generated code is turned off runtime switch or |
| 2597 | // at compilation. |
| 2598 | #ifdef V8_INTERPRETED_REGEXP |
machenbach@chromium.org | 9b95fd7 | 2014-03-26 01:04:35 +0000 | [diff] [blame] | 2599 | __ TailCallRuntime(Runtime::kHiddenRegExpExec, 4, 1); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2600 | #else // V8_INTERPRETED_REGEXP |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2601 | |
| 2602 | // Stack frame on entry. |
| 2603 | // sp[0]: last_match_info (expected JSArray) |
| 2604 | // sp[4]: previous index |
| 2605 | // sp[8]: subject string |
| 2606 | // sp[12]: JSRegExp object |
| 2607 | |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 2608 | const int kLastMatchInfoOffset = 0 * kPointerSize; |
| 2609 | const int kPreviousIndexOffset = 1 * kPointerSize; |
| 2610 | const int kSubjectOffset = 2 * kPointerSize; |
| 2611 | const int kJSRegExpOffset = 3 * kPointerSize; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2612 | |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 2613 | Isolate* isolate = masm->isolate(); |
| 2614 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2615 | Label runtime; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2616 | // Allocation of registers for this function. These are in callee save |
| 2617 | // registers and will be preserved by the call to the native RegExp code, as |
| 2618 | // this code is called using the normal C calling convention. When calling |
| 2619 | // directly from generated code the native RegExp code will not do a GC and |
| 2620 | // therefore the content of these registers are safe to use after the call. |
| 2621 | // MIPS - using s0..s2, since we are not using CEntry Stub. |
| 2622 | Register subject = s0; |
| 2623 | Register regexp_data = s1; |
| 2624 | Register last_match_info_elements = s2; |
| 2625 | |
| 2626 | // Ensure that a RegExp stack is allocated. |
| 2627 | ExternalReference address_of_regexp_stack_memory_address = |
| 2628 | ExternalReference::address_of_regexp_stack_memory_address( |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 2629 | isolate); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2630 | ExternalReference address_of_regexp_stack_memory_size = |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 2631 | ExternalReference::address_of_regexp_stack_memory_size(isolate); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2632 | __ li(a0, Operand(address_of_regexp_stack_memory_size)); |
| 2633 | __ lw(a0, MemOperand(a0, 0)); |
| 2634 | __ Branch(&runtime, eq, a0, Operand(zero_reg)); |
| 2635 | |
| 2636 | // Check that the first argument is a JSRegExp object. |
| 2637 | __ lw(a0, MemOperand(sp, kJSRegExpOffset)); |
| 2638 | STATIC_ASSERT(kSmiTag == 0); |
| 2639 | __ JumpIfSmi(a0, &runtime); |
| 2640 | __ GetObjectType(a0, a1, a1); |
| 2641 | __ Branch(&runtime, ne, a1, Operand(JS_REGEXP_TYPE)); |
| 2642 | |
| 2643 | // Check that the RegExp has been compiled (data contains a fixed array). |
| 2644 | __ lw(regexp_data, FieldMemOperand(a0, JSRegExp::kDataOffset)); |
| 2645 | if (FLAG_debug_code) { |
machenbach@chromium.org | 7ff7607 | 2013-11-21 09:47:43 +0000 | [diff] [blame] | 2646 | __ SmiTst(regexp_data, t0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2647 | __ Check(nz, |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 2648 | kUnexpectedTypeForRegExpDataFixedArrayExpected, |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2649 | t0, |
| 2650 | Operand(zero_reg)); |
| 2651 | __ GetObjectType(regexp_data, a0, a0); |
| 2652 | __ Check(eq, |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 2653 | kUnexpectedTypeForRegExpDataFixedArrayExpected, |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2654 | a0, |
| 2655 | Operand(FIXED_ARRAY_TYPE)); |
| 2656 | } |
| 2657 | |
| 2658 | // regexp_data: RegExp data (FixedArray) |
| 2659 | // Check the type of the RegExp. Only continue if type is JSRegExp::IRREGEXP. |
| 2660 | __ lw(a0, FieldMemOperand(regexp_data, JSRegExp::kDataTagOffset)); |
| 2661 | __ Branch(&runtime, ne, a0, Operand(Smi::FromInt(JSRegExp::IRREGEXP))); |
| 2662 | |
| 2663 | // regexp_data: RegExp data (FixedArray) |
| 2664 | // Check that the number of captures fit in the static offsets vector buffer. |
| 2665 | __ lw(a2, |
| 2666 | FieldMemOperand(regexp_data, JSRegExp::kIrregexpCaptureCountOffset)); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2667 | // Check (number_of_captures + 1) * 2 <= offsets vector size |
| 2668 | // Or number_of_captures * 2 <= offsets vector size - 2 |
| 2669 | // Multiplying by 2 comes for free since a2 is smi-tagged. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2670 | STATIC_ASSERT(kSmiTag == 0); |
| 2671 | STATIC_ASSERT(kSmiTagSize + kSmiShiftSize == 1); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2672 | STATIC_ASSERT(Isolate::kJSRegexpStaticOffsetsVectorSize >= 2); |
yangguo@chromium.org | 355cfd1 | 2012-08-29 15:32:24 +0000 | [diff] [blame] | 2673 | __ Branch( |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2674 | &runtime, hi, a2, Operand(Isolate::kJSRegexpStaticOffsetsVectorSize - 2)); |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 2675 | |
| 2676 | // Reset offset for possibly sliced string. |
| 2677 | __ mov(t0, zero_reg); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2678 | __ lw(subject, MemOperand(sp, kSubjectOffset)); |
| 2679 | __ JumpIfSmi(subject, &runtime); |
| 2680 | __ mov(a3, subject); // Make a copy of the original subject string. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2681 | __ lw(a0, FieldMemOperand(subject, HeapObject::kMapOffset)); |
| 2682 | __ lbu(a0, FieldMemOperand(a0, Map::kInstanceTypeOffset)); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2683 | // subject: subject string |
| 2684 | // a3: subject string |
| 2685 | // a0: subject string instance type |
| 2686 | // regexp_data: RegExp data (FixedArray) |
| 2687 | // Handle subject string according to its encoding and representation: |
| 2688 | // (1) Sequential string? If yes, go to (5). |
| 2689 | // (2) Anything but sequential or cons? If yes, go to (6). |
| 2690 | // (3) Cons string. If the string is flat, replace subject with first string. |
| 2691 | // Otherwise bailout. |
| 2692 | // (4) Is subject external? If yes, go to (7). |
| 2693 | // (5) Sequential string. Load regexp code according to encoding. |
| 2694 | // (E) Carry on. |
| 2695 | /// [...] |
| 2696 | |
| 2697 | // Deferred code at the end of the stub: |
| 2698 | // (6) Not a long external string? If yes, go to (8). |
| 2699 | // (7) External string. Make it, offset-wise, look like a sequential string. |
| 2700 | // Go to (5). |
| 2701 | // (8) Short external string or not a string? If yes, bail out to runtime. |
| 2702 | // (9) Sliced string. Replace subject with parent. Go to (4). |
| 2703 | |
| 2704 | Label seq_string /* 5 */, external_string /* 7 */, |
| 2705 | check_underlying /* 4 */, not_seq_nor_cons /* 6 */, |
| 2706 | not_long_external /* 8 */; |
| 2707 | |
| 2708 | // (1) Sequential string? If yes, go to (5). |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2709 | __ And(a1, |
| 2710 | a0, |
| 2711 | Operand(kIsNotStringMask | |
| 2712 | kStringRepresentationMask | |
| 2713 | kShortExternalStringMask)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2714 | STATIC_ASSERT((kStringTag | kSeqStringTag) == 0); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2715 | __ Branch(&seq_string, eq, a1, Operand(zero_reg)); // Go to (5). |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2716 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2717 | // (2) Anything but sequential or cons? If yes, go to (6). |
yangguo@chromium.org | 80c42ed | 2011-08-31 09:03:56 +0000 | [diff] [blame] | 2718 | STATIC_ASSERT(kConsStringTag < kExternalStringTag); |
| 2719 | STATIC_ASSERT(kSlicedStringTag > kExternalStringTag); |
svenpanne@chromium.org | ecb9dd6 | 2011-12-01 08:22:35 +0000 | [diff] [blame] | 2720 | STATIC_ASSERT(kIsNotStringMask > kExternalStringTag); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2721 | STATIC_ASSERT(kShortExternalStringTag > kExternalStringTag); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2722 | // Go to (6). |
| 2723 | __ Branch(¬_seq_nor_cons, ge, a1, Operand(kExternalStringTag)); |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 2724 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2725 | // (3) Cons string. Check that it's flat. |
| 2726 | // Replace subject with first string and reload instance type. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2727 | __ lw(a0, FieldMemOperand(subject, ConsString::kSecondOffset)); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 2728 | __ LoadRoot(a1, Heap::kempty_stringRootIndex); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2729 | __ Branch(&runtime, ne, a0, Operand(a1)); |
| 2730 | __ lw(subject, FieldMemOperand(subject, ConsString::kFirstOffset)); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2731 | |
| 2732 | // (4) Is subject external? If yes, go to (7). |
| 2733 | __ bind(&check_underlying); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2734 | __ lw(a0, FieldMemOperand(subject, HeapObject::kMapOffset)); |
| 2735 | __ lbu(a0, FieldMemOperand(a0, Map::kInstanceTypeOffset)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2736 | STATIC_ASSERT(kSeqStringTag == 0); |
| 2737 | __ And(at, a0, Operand(kStringRepresentationMask)); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2738 | // The underlying external string is never a short external string. |
| 2739 | STATIC_CHECK(ExternalString::kMaxShortLength < ConsString::kMinLength); |
| 2740 | STATIC_CHECK(ExternalString::kMaxShortLength < SlicedString::kMinLength); |
| 2741 | __ Branch(&external_string, ne, at, Operand(zero_reg)); // Go to (7). |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2742 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2743 | // (5) Sequential string. Load regexp code according to encoding. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2744 | __ bind(&seq_string); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2745 | // subject: sequential subject string (or look-alike, external string) |
| 2746 | // a3: original subject string |
| 2747 | // Load previous index and check range before a3 is overwritten. We have to |
| 2748 | // use a3 instead of subject here because subject might have been only made |
| 2749 | // to look like a sequential string when it actually is an external string. |
| 2750 | __ lw(a1, MemOperand(sp, kPreviousIndexOffset)); |
| 2751 | __ JumpIfNotSmi(a1, &runtime); |
| 2752 | __ lw(a3, FieldMemOperand(a3, String::kLengthOffset)); |
| 2753 | __ Branch(&runtime, ls, a3, Operand(a1)); |
| 2754 | __ sra(a1, a1, kSmiTagSize); // Untag the Smi. |
| 2755 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2756 | STATIC_ASSERT(kStringEncodingMask == 4); |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 2757 | STATIC_ASSERT(kOneByteStringTag == 4); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2758 | STATIC_ASSERT(kTwoByteStringTag == 0); |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 2759 | __ And(a0, a0, Operand(kStringEncodingMask)); // Non-zero for ASCII. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2760 | __ lw(t9, FieldMemOperand(regexp_data, JSRegExp::kDataAsciiCodeOffset)); |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 2761 | __ sra(a3, a0, 2); // a3 is 1 for ASCII, 0 for UC16 (used below). |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 2762 | __ lw(t1, FieldMemOperand(regexp_data, JSRegExp::kDataUC16CodeOffset)); |
mstarzinger@chromium.org | 3233d2f | 2012-03-14 11:16:03 +0000 | [diff] [blame] | 2763 | __ Movz(t9, t1, a0); // If UC16 (a0 is 0), replace t9 w/kDataUC16CodeOffset. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2764 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2765 | // (E) Carry on. String handling is done. |
| 2766 | // t9: irregexp code |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2767 | // Check that the irregexp code has been generated for the actual string |
sgjesse@chromium.org | 6db8871 | 2011-07-11 11:41:22 +0000 | [diff] [blame] | 2768 | // encoding. If it has, the field contains a code object otherwise it contains |
| 2769 | // a smi (code flushing support). |
| 2770 | __ JumpIfSmi(t9, &runtime); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2771 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2772 | // a1: previous index |
| 2773 | // a3: encoding of subject string (1 if ASCII, 0 if two_byte); |
| 2774 | // t9: code |
| 2775 | // subject: Subject string |
| 2776 | // regexp_data: RegExp data (FixedArray) |
| 2777 | // All checks done. Now push arguments for native regexp code. |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 2778 | __ IncrementCounter(isolate->counters()->regexp_entry_native(), |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2779 | 1, a0, a2); |
| 2780 | |
| 2781 | // Isolates: note we add an additional parameter here (isolate pointer). |
jkummerow@chromium.org | 777db6f | 2012-05-24 09:33:09 +0000 | [diff] [blame] | 2782 | const int kRegExpExecuteArguments = 9; |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 2783 | const int kParameterRegisters = 4; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2784 | __ EnterExitFrame(false, kRegExpExecuteArguments - kParameterRegisters); |
| 2785 | |
| 2786 | // Stack pointer now points to cell where return address is to be written. |
| 2787 | // Arguments are before that on the stack or in registers, meaning we |
| 2788 | // treat the return address as argument 5. Thus every argument after that |
| 2789 | // needs to be shifted back by 1. Since DirectCEntryStub will handle |
| 2790 | // allocating space for the c argument slots, we don't need to calculate |
| 2791 | // that into the argument positions on the stack. This is how the stack will |
| 2792 | // look (sp meaning the value of sp at this moment): |
jkummerow@chromium.org | 777db6f | 2012-05-24 09:33:09 +0000 | [diff] [blame] | 2793 | // [sp + 5] - Argument 9 |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2794 | // [sp + 4] - Argument 8 |
| 2795 | // [sp + 3] - Argument 7 |
| 2796 | // [sp + 2] - Argument 6 |
| 2797 | // [sp + 1] - Argument 5 |
| 2798 | // [sp + 0] - saved ra |
| 2799 | |
jkummerow@chromium.org | 777db6f | 2012-05-24 09:33:09 +0000 | [diff] [blame] | 2800 | // Argument 9: Pass current isolate address. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2801 | // CFunctionArgumentOperand handles MIPS stack argument slots. |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2802 | __ li(a0, Operand(ExternalReference::isolate_address(isolate))); |
jkummerow@chromium.org | 777db6f | 2012-05-24 09:33:09 +0000 | [diff] [blame] | 2803 | __ sw(a0, MemOperand(sp, 5 * kPointerSize)); |
| 2804 | |
| 2805 | // Argument 8: Indicate that this is a direct call from JavaScript. |
| 2806 | __ li(a0, Operand(1)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2807 | __ sw(a0, MemOperand(sp, 4 * kPointerSize)); |
| 2808 | |
jkummerow@chromium.org | 777db6f | 2012-05-24 09:33:09 +0000 | [diff] [blame] | 2809 | // Argument 7: Start (high end) of backtracking stack memory area. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2810 | __ li(a0, Operand(address_of_regexp_stack_memory_address)); |
| 2811 | __ lw(a0, MemOperand(a0, 0)); |
| 2812 | __ li(a2, Operand(address_of_regexp_stack_memory_size)); |
| 2813 | __ lw(a2, MemOperand(a2, 0)); |
| 2814 | __ addu(a0, a0, a2); |
jkummerow@chromium.org | 777db6f | 2012-05-24 09:33:09 +0000 | [diff] [blame] | 2815 | __ sw(a0, MemOperand(sp, 3 * kPointerSize)); |
| 2816 | |
| 2817 | // Argument 6: Set the number of capture registers to zero to force global |
| 2818 | // regexps to behave as non-global. This does not affect non-global regexps. |
| 2819 | __ mov(a0, zero_reg); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2820 | __ sw(a0, MemOperand(sp, 2 * kPointerSize)); |
| 2821 | |
| 2822 | // Argument 5: static offsets vector buffer. |
| 2823 | __ li(a0, Operand( |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 2824 | ExternalReference::address_of_static_offsets_vector(isolate))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2825 | __ sw(a0, MemOperand(sp, 1 * kPointerSize)); |
| 2826 | |
| 2827 | // For arguments 4 and 3 get string length, calculate start of string data |
| 2828 | // and calculate the shift of the index (0 for ASCII and 1 for two byte). |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2829 | __ Addu(t2, subject, Operand(SeqString::kHeaderSize - kHeapObjectTag)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2830 | __ Xor(a3, a3, Operand(1)); // 1 for 2-byte str, 0 for 1-byte. |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 2831 | // Load the length from the original subject string from the previous stack |
| 2832 | // frame. Therefore we have to use fp, which points exactly to two pointer |
| 2833 | // sizes below the previous sp. (Because creating a new stack frame pushes |
| 2834 | // the previous fp onto the stack and moves up sp by 2 * kPointerSize.) |
jkummerow@chromium.org | 486075a | 2011-09-07 12:44:28 +0000 | [diff] [blame] | 2835 | __ lw(subject, MemOperand(fp, kSubjectOffset + 2 * kPointerSize)); |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 2836 | // If slice offset is not 0, load the length from the original sliced string. |
| 2837 | // Argument 4, a3: End of string data |
| 2838 | // Argument 3, a2: Start of string data |
| 2839 | // Prepare start and end index of the input. |
| 2840 | __ sllv(t1, t0, a3); |
| 2841 | __ addu(t0, t2, t1); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2842 | __ sllv(t1, a1, a3); |
| 2843 | __ addu(a2, t0, t1); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2844 | |
jkummerow@chromium.org | 486075a | 2011-09-07 12:44:28 +0000 | [diff] [blame] | 2845 | __ lw(t2, FieldMemOperand(subject, String::kLengthOffset)); |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 2846 | __ sra(t2, t2, kSmiTagSize); |
| 2847 | __ sllv(t1, t2, a3); |
| 2848 | __ addu(a3, t0, t1); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2849 | // Argument 2 (a1): Previous index. |
| 2850 | // Already there |
| 2851 | |
| 2852 | // Argument 1 (a0): Subject string. |
jkummerow@chromium.org | 486075a | 2011-09-07 12:44:28 +0000 | [diff] [blame] | 2853 | __ mov(a0, subject); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2854 | |
| 2855 | // Locate the code entry and call it. |
| 2856 | __ Addu(t9, t9, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 2857 | DirectCEntryStub stub; |
| 2858 | stub.GenerateCall(masm, t9); |
| 2859 | |
machenbach@chromium.org | 528ce02 | 2013-09-23 14:09:36 +0000 | [diff] [blame] | 2860 | __ LeaveExitFrame(false, no_reg, true); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2861 | |
| 2862 | // v0: result |
| 2863 | // subject: subject string (callee saved) |
| 2864 | // regexp_data: RegExp data (callee saved) |
| 2865 | // last_match_info_elements: Last match info elements (callee saved) |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2866 | // Check the result. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2867 | Label success; |
jkummerow@chromium.org | 777db6f | 2012-05-24 09:33:09 +0000 | [diff] [blame] | 2868 | __ Branch(&success, eq, v0, Operand(1)); |
| 2869 | // We expect exactly one result since we force the called regexp to behave |
| 2870 | // as non-global. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2871 | Label failure; |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 2872 | __ Branch(&failure, eq, v0, Operand(NativeRegExpMacroAssembler::FAILURE)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2873 | // If not exception it can only be retry. Handle that in the runtime system. |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 2874 | __ Branch(&runtime, ne, v0, Operand(NativeRegExpMacroAssembler::EXCEPTION)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2875 | // Result must now be exception. If there is no pending exception already a |
| 2876 | // stack overflow (on the backtrack stack) was detected in RegExp code but |
| 2877 | // haven't created the exception yet. Handle that in the runtime system. |
| 2878 | // TODO(592): Rerunning the RegExp to get the stack overflow exception. |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 2879 | __ li(a1, Operand(isolate->factory()->the_hole_value())); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2880 | __ li(a2, Operand(ExternalReference(Isolate::kPendingExceptionAddress, |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 2881 | isolate))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2882 | __ lw(v0, MemOperand(a2, 0)); |
jkummerow@chromium.org | 486075a | 2011-09-07 12:44:28 +0000 | [diff] [blame] | 2883 | __ Branch(&runtime, eq, v0, Operand(a1)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2884 | |
| 2885 | __ sw(a1, MemOperand(a2, 0)); // Clear pending exception. |
| 2886 | |
| 2887 | // Check if the exception is a termination. If so, throw as uncatchable. |
| 2888 | __ LoadRoot(a0, Heap::kTerminationExceptionRootIndex); |
| 2889 | Label termination_exception; |
jkummerow@chromium.org | 486075a | 2011-09-07 12:44:28 +0000 | [diff] [blame] | 2890 | __ Branch(&termination_exception, eq, v0, Operand(a0)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2891 | |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 2892 | __ Throw(v0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2893 | |
| 2894 | __ bind(&termination_exception); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 2895 | __ ThrowUncatchable(v0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2896 | |
| 2897 | __ bind(&failure); |
| 2898 | // For failure and exception return null. |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 2899 | __ li(v0, Operand(isolate->factory()->null_value())); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 2900 | __ DropAndRet(4); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2901 | |
| 2902 | // Process the result from the native regexp code. |
| 2903 | __ bind(&success); |
| 2904 | __ lw(a1, |
| 2905 | FieldMemOperand(regexp_data, JSRegExp::kIrregexpCaptureCountOffset)); |
| 2906 | // Calculate number of capture registers (number_of_captures + 1) * 2. |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2907 | // Multiplying by 2 comes for free since r1 is smi-tagged. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2908 | STATIC_ASSERT(kSmiTag == 0); |
| 2909 | STATIC_ASSERT(kSmiTagSize + kSmiShiftSize == 1); |
| 2910 | __ Addu(a1, a1, Operand(2)); // a1 was a smi. |
| 2911 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2912 | __ lw(a0, MemOperand(sp, kLastMatchInfoOffset)); |
| 2913 | __ JumpIfSmi(a0, &runtime); |
| 2914 | __ GetObjectType(a0, a2, a2); |
| 2915 | __ Branch(&runtime, ne, a2, Operand(JS_ARRAY_TYPE)); |
| 2916 | // Check that the JSArray is in fast case. |
| 2917 | __ lw(last_match_info_elements, |
| 2918 | FieldMemOperand(a0, JSArray::kElementsOffset)); |
| 2919 | __ lw(a0, FieldMemOperand(last_match_info_elements, HeapObject::kMapOffset)); |
| 2920 | __ LoadRoot(at, Heap::kFixedArrayMapRootIndex); |
| 2921 | __ Branch(&runtime, ne, a0, Operand(at)); |
| 2922 | // Check that the last match info has space for the capture registers and the |
| 2923 | // additional information. |
| 2924 | __ lw(a0, |
| 2925 | FieldMemOperand(last_match_info_elements, FixedArray::kLengthOffset)); |
| 2926 | __ Addu(a2, a1, Operand(RegExpImpl::kLastMatchOverhead)); |
| 2927 | __ sra(at, a0, kSmiTagSize); |
| 2928 | __ Branch(&runtime, gt, a2, Operand(at)); |
| 2929 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2930 | // a1: number of capture registers |
| 2931 | // subject: subject string |
| 2932 | // Store the capture count. |
| 2933 | __ sll(a2, a1, kSmiTagSize + kSmiShiftSize); // To smi. |
| 2934 | __ sw(a2, FieldMemOperand(last_match_info_elements, |
| 2935 | RegExpImpl::kLastCaptureCountOffset)); |
| 2936 | // Store last subject and last input. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2937 | __ sw(subject, |
| 2938 | FieldMemOperand(last_match_info_elements, |
| 2939 | RegExpImpl::kLastSubjectOffset)); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 2940 | __ mov(a2, subject); |
| 2941 | __ RecordWriteField(last_match_info_elements, |
| 2942 | RegExpImpl::kLastSubjectOffset, |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2943 | subject, |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 2944 | t3, |
| 2945 | kRAHasNotBeenSaved, |
| 2946 | kDontSaveFPRegs); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2947 | __ mov(subject, a2); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2948 | __ sw(subject, |
| 2949 | FieldMemOperand(last_match_info_elements, |
| 2950 | RegExpImpl::kLastInputOffset)); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 2951 | __ RecordWriteField(last_match_info_elements, |
| 2952 | RegExpImpl::kLastInputOffset, |
| 2953 | subject, |
| 2954 | t3, |
| 2955 | kRAHasNotBeenSaved, |
| 2956 | kDontSaveFPRegs); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2957 | |
| 2958 | // Get the static offsets vector filled by the native regexp code. |
| 2959 | ExternalReference address_of_static_offsets_vector = |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 2960 | ExternalReference::address_of_static_offsets_vector(isolate); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2961 | __ li(a2, Operand(address_of_static_offsets_vector)); |
| 2962 | |
| 2963 | // a1: number of capture registers |
| 2964 | // a2: offsets vector |
| 2965 | Label next_capture, done; |
| 2966 | // Capture register counter starts from number of capture registers and |
| 2967 | // counts down until wrapping after zero. |
| 2968 | __ Addu(a0, |
| 2969 | last_match_info_elements, |
| 2970 | Operand(RegExpImpl::kFirstCaptureOffset - kHeapObjectTag)); |
| 2971 | __ bind(&next_capture); |
| 2972 | __ Subu(a1, a1, Operand(1)); |
| 2973 | __ Branch(&done, lt, a1, Operand(zero_reg)); |
| 2974 | // Read the value from the static offsets vector buffer. |
| 2975 | __ lw(a3, MemOperand(a2, 0)); |
| 2976 | __ addiu(a2, a2, kPointerSize); |
| 2977 | // Store the smi value in the last match info. |
| 2978 | __ sll(a3, a3, kSmiTagSize); // Convert to Smi. |
| 2979 | __ sw(a3, MemOperand(a0, 0)); |
| 2980 | __ Branch(&next_capture, USE_DELAY_SLOT); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 2981 | __ addiu(a0, a0, kPointerSize); // In branch delay slot. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2982 | |
| 2983 | __ bind(&done); |
| 2984 | |
| 2985 | // Return last match info. |
| 2986 | __ lw(v0, MemOperand(sp, kLastMatchInfoOffset)); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 2987 | __ DropAndRet(4); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2988 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2989 | // Do the runtime call to execute the regexp. |
| 2990 | __ bind(&runtime); |
machenbach@chromium.org | 9b95fd7 | 2014-03-26 01:04:35 +0000 | [diff] [blame] | 2991 | __ TailCallRuntime(Runtime::kHiddenRegExpExec, 4, 1); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 2992 | |
| 2993 | // Deferred code for string handling. |
| 2994 | // (6) Not a long external string? If yes, go to (8). |
| 2995 | __ bind(¬_seq_nor_cons); |
| 2996 | // Go to (8). |
| 2997 | __ Branch(¬_long_external, gt, a1, Operand(kExternalStringTag)); |
| 2998 | |
| 2999 | // (7) External string. Make it, offset-wise, look like a sequential string. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3000 | __ bind(&external_string); |
| 3001 | __ lw(a0, FieldMemOperand(subject, HeapObject::kMapOffset)); |
| 3002 | __ lbu(a0, FieldMemOperand(a0, Map::kInstanceTypeOffset)); |
| 3003 | if (FLAG_debug_code) { |
| 3004 | // Assert that we do not have a cons or slice (indirect strings) here. |
| 3005 | // Sequential strings have already been ruled out. |
| 3006 | __ And(at, a0, Operand(kIsIndirectStringMask)); |
| 3007 | __ Assert(eq, |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 3008 | kExternalStringExpectedButNotFound, |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3009 | at, |
| 3010 | Operand(zero_reg)); |
| 3011 | } |
| 3012 | __ lw(subject, |
| 3013 | FieldMemOperand(subject, ExternalString::kResourceDataOffset)); |
| 3014 | // Move the pointer so that offset-wise, it looks like a sequential string. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 3015 | STATIC_ASSERT(SeqTwoByteString::kHeaderSize == SeqOneByteString::kHeaderSize); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3016 | __ Subu(subject, |
| 3017 | subject, |
| 3018 | SeqTwoByteString::kHeaderSize - kHeapObjectTag); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 3019 | __ jmp(&seq_string); // Go to (5). |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3020 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 3021 | // (8) Short external string or not a string? If yes, bail out to runtime. |
| 3022 | __ bind(¬_long_external); |
| 3023 | STATIC_ASSERT(kNotStringTag != 0 && kShortExternalStringTag !=0); |
| 3024 | __ And(at, a1, Operand(kIsNotStringMask | kShortExternalStringMask)); |
| 3025 | __ Branch(&runtime, ne, at, Operand(zero_reg)); |
| 3026 | |
| 3027 | // (9) Sliced string. Replace subject with parent. Go to (4). |
| 3028 | // Load offset into t0 and replace subject string with parent. |
| 3029 | __ lw(t0, FieldMemOperand(subject, SlicedString::kOffsetOffset)); |
| 3030 | __ sra(t0, t0, kSmiTagSize); |
| 3031 | __ lw(subject, FieldMemOperand(subject, SlicedString::kParentOffset)); |
| 3032 | __ jmp(&check_underlying); // Go to (4). |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3033 | #endif // V8_INTERPRETED_REGEXP |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3034 | } |
| 3035 | |
| 3036 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3037 | static void GenerateRecordCallTarget(MacroAssembler* masm) { |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3038 | // Cache the called function in a feedback vector slot. Cache states |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3039 | // are uninitialized, monomorphic (indicated by a JSFunction), and |
| 3040 | // megamorphic. |
machenbach@chromium.org | 528ce02 | 2013-09-23 14:09:36 +0000 | [diff] [blame] | 3041 | // a0 : number of arguments to the construct function |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3042 | // a1 : the function to call |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3043 | // a2 : Feedback vector |
| 3044 | // a3 : slot in feedback vector (Smi) |
machenbach@chromium.org | 3a9c5d9 | 2014-02-21 08:10:27 +0000 | [diff] [blame] | 3045 | Label initialize, done, miss, megamorphic, not_array_function; |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3046 | |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3047 | ASSERT_EQ(*TypeFeedbackInfo::MegamorphicSentinel(masm->isolate()), |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 3048 | masm->isolate()->heap()->megamorphic_symbol()); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3049 | ASSERT_EQ(*TypeFeedbackInfo::UninitializedSentinel(masm->isolate()), |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 3050 | masm->isolate()->heap()->uninitialized_symbol()); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3051 | |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3052 | // Load the cache state into t0. |
| 3053 | __ sll(t0, a3, kPointerSizeLog2 - kSmiTagSize); |
| 3054 | __ Addu(t0, a2, Operand(t0)); |
| 3055 | __ lw(t0, FieldMemOperand(t0, FixedArray::kHeaderSize)); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3056 | |
| 3057 | // A monomorphic cache hit or an already megamorphic state: invoke the |
| 3058 | // function without changing the state. |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3059 | __ Branch(&done, eq, t0, Operand(a1)); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3060 | |
machenbach@chromium.org | 69f64b1 | 2014-03-20 01:04:55 +0000 | [diff] [blame] | 3061 | if (!FLAG_pretenuring_call_new) { |
| 3062 | // If we came here, we need to see if we are the array function. |
| 3063 | // If we didn't have a matching function, and we didn't find the megamorph |
| 3064 | // sentinel, then we have in the slot either some other function or an |
| 3065 | // AllocationSite. Do a map check on the object in a3. |
| 3066 | __ lw(t1, FieldMemOperand(t0, 0)); |
| 3067 | __ LoadRoot(at, Heap::kAllocationSiteMapRootIndex); |
| 3068 | __ Branch(&miss, ne, t1, Operand(at)); |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 3069 | |
machenbach@chromium.org | 69f64b1 | 2014-03-20 01:04:55 +0000 | [diff] [blame] | 3070 | // Make sure the function is the Array() function |
| 3071 | __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, t0); |
| 3072 | __ Branch(&megamorphic, ne, a1, Operand(t0)); |
| 3073 | __ jmp(&done); |
| 3074 | } |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3075 | |
machenbach@chromium.org | 3a9c5d9 | 2014-02-21 08:10:27 +0000 | [diff] [blame] | 3076 | __ bind(&miss); |
| 3077 | |
| 3078 | // A monomorphic miss (i.e, here the cache is not uninitialized) goes |
| 3079 | // megamorphic. |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 3080 | __ LoadRoot(at, Heap::kUninitializedSymbolRootIndex); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3081 | __ Branch(&initialize, eq, t0, Operand(at)); |
machenbach@chromium.org | 3a9c5d9 | 2014-02-21 08:10:27 +0000 | [diff] [blame] | 3082 | // MegamorphicSentinel is an immortal immovable object (undefined) so no |
| 3083 | // write-barrier is needed. |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3084 | __ bind(&megamorphic); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3085 | __ sll(t0, a3, kPointerSizeLog2 - kSmiTagSize); |
| 3086 | __ Addu(t0, a2, Operand(t0)); |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 3087 | __ LoadRoot(at, Heap::kMegamorphicSymbolRootIndex); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3088 | __ sw(at, FieldMemOperand(t0, FixedArray::kHeaderSize)); |
machenbach@chromium.org | 3a9c5d9 | 2014-02-21 08:10:27 +0000 | [diff] [blame] | 3089 | __ jmp(&done); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3090 | |
machenbach@chromium.org | 69f64b1 | 2014-03-20 01:04:55 +0000 | [diff] [blame] | 3091 | // An uninitialized cache is patched with the function. |
machenbach@chromium.org | 3a9c5d9 | 2014-02-21 08:10:27 +0000 | [diff] [blame] | 3092 | __ bind(&initialize); |
machenbach@chromium.org | 69f64b1 | 2014-03-20 01:04:55 +0000 | [diff] [blame] | 3093 | if (!FLAG_pretenuring_call_new) { |
| 3094 | // Make sure the function is the Array() function. |
| 3095 | __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, t0); |
| 3096 | __ Branch(¬_array_function, ne, a1, Operand(t0)); |
machenbach@chromium.org | 3a9c5d9 | 2014-02-21 08:10:27 +0000 | [diff] [blame] | 3097 | |
machenbach@chromium.org | 69f64b1 | 2014-03-20 01:04:55 +0000 | [diff] [blame] | 3098 | // The target function is the Array constructor, |
| 3099 | // Create an AllocationSite if we don't already have it, store it in the |
| 3100 | // slot. |
| 3101 | { |
| 3102 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 3103 | const RegList kSavedRegs = |
| 3104 | 1 << 4 | // a0 |
| 3105 | 1 << 5 | // a1 |
| 3106 | 1 << 6 | // a2 |
| 3107 | 1 << 7; // a3 |
danno@chromium.org | bee5199 | 2013-07-10 14:57:15 +0000 | [diff] [blame] | 3108 | |
machenbach@chromium.org | 69f64b1 | 2014-03-20 01:04:55 +0000 | [diff] [blame] | 3109 | // Arguments register must be smi-tagged to call out. |
| 3110 | __ SmiTag(a0); |
| 3111 | __ MultiPush(kSavedRegs); |
danno@chromium.org | bee5199 | 2013-07-10 14:57:15 +0000 | [diff] [blame] | 3112 | |
machenbach@chromium.org | 69f64b1 | 2014-03-20 01:04:55 +0000 | [diff] [blame] | 3113 | CreateAllocationSiteStub create_stub; |
| 3114 | __ CallStub(&create_stub); |
danno@chromium.org | bee5199 | 2013-07-10 14:57:15 +0000 | [diff] [blame] | 3115 | |
machenbach@chromium.org | 69f64b1 | 2014-03-20 01:04:55 +0000 | [diff] [blame] | 3116 | __ MultiPop(kSavedRegs); |
| 3117 | __ SmiUntag(a0); |
| 3118 | } |
| 3119 | __ Branch(&done); |
| 3120 | |
| 3121 | __ bind(¬_array_function); |
danno@chromium.org | bee5199 | 2013-07-10 14:57:15 +0000 | [diff] [blame] | 3122 | } |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3123 | |
| 3124 | __ sll(t0, a3, kPointerSizeLog2 - kSmiTagSize); |
| 3125 | __ Addu(t0, a2, Operand(t0)); |
| 3126 | __ Addu(t0, t0, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 3127 | __ sw(a1, MemOperand(t0, 0)); |
| 3128 | |
| 3129 | __ Push(t0, a2, a1); |
| 3130 | __ RecordWrite(a2, t0, a1, kRAHasNotBeenSaved, kDontSaveFPRegs, |
| 3131 | EMIT_REMEMBERED_SET, OMIT_SMI_CHECK); |
| 3132 | __ Pop(t0, a2, a1); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3133 | |
| 3134 | __ bind(&done); |
| 3135 | } |
| 3136 | |
| 3137 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3138 | void CallFunctionStub::Generate(MacroAssembler* masm) { |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 3139 | // a1 : the function to call |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3140 | // a2 : feedback vector |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 3141 | // a3 : (only if a2 is not the megamorphic symbol) slot in feedback |
| 3142 | // vector (Smi) |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3143 | Label slow, non_function, wrap, cont; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3144 | |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3145 | if (NeedsChecks()) { |
| 3146 | // Check that the function is really a JavaScript function. |
| 3147 | // a1: pushed function (to be verified) |
| 3148 | __ JumpIfSmi(a1, &non_function); |
ulan@chromium.org | 9cbaabd | 2014-01-08 10:55:36 +0000 | [diff] [blame] | 3149 | |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3150 | // Goto slow case if we do not have a function. |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3151 | __ GetObjectType(a1, t0, t0); |
| 3152 | __ Branch(&slow, ne, t0, Operand(JS_FUNCTION_TYPE)); |
mstarzinger@chromium.org | 88d326b | 2012-04-23 12:57:22 +0000 | [diff] [blame] | 3153 | |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3154 | if (RecordCallTarget()) { |
| 3155 | GenerateRecordCallTarget(masm); |
machenbach@chromium.org | 69f64b1 | 2014-03-20 01:04:55 +0000 | [diff] [blame] | 3156 | // Type information was updated. Because we may call Array, which |
| 3157 | // expects either undefined or an AllocationSite in a2 we need |
| 3158 | // to set a2 to undefined. |
| 3159 | __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3160 | } |
mstarzinger@chromium.org | 88d326b | 2012-04-23 12:57:22 +0000 | [diff] [blame] | 3161 | } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3162 | |
| 3163 | // Fast-case: Invoke the function now. |
| 3164 | // a1: pushed function |
| 3165 | ParameterCount actual(argc_); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3166 | |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3167 | if (CallAsMethod()) { |
| 3168 | if (NeedsChecks()) { |
| 3169 | // Do not transform the receiver for strict mode functions and natives. |
machenbach@chromium.org | 0e76f00 | 2014-02-03 07:23:16 +0000 | [diff] [blame] | 3170 | __ lw(a3, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 3171 | __ lw(t0, FieldMemOperand(a3, SharedFunctionInfo::kCompilerHintsOffset)); |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3172 | int32_t strict_mode_function_mask = |
| 3173 | 1 << (SharedFunctionInfo::kStrictModeFunction + kSmiTagSize); |
| 3174 | int32_t native_mask = 1 << (SharedFunctionInfo::kNative + kSmiTagSize); |
machenbach@chromium.org | 0e76f00 | 2014-02-03 07:23:16 +0000 | [diff] [blame] | 3175 | __ And(at, t0, Operand(strict_mode_function_mask | native_mask)); |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3176 | __ Branch(&cont, ne, at, Operand(zero_reg)); |
| 3177 | } |
| 3178 | |
dslomov@chromium.org | 486536d | 2014-03-12 13:09:18 +0000 | [diff] [blame] | 3179 | // Compute the receiver in sloppy mode. |
machenbach@chromium.org | 0e76f00 | 2014-02-03 07:23:16 +0000 | [diff] [blame] | 3180 | __ lw(a3, MemOperand(sp, argc_ * kPointerSize)); |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3181 | |
| 3182 | if (NeedsChecks()) { |
machenbach@chromium.org | 0e76f00 | 2014-02-03 07:23:16 +0000 | [diff] [blame] | 3183 | __ JumpIfSmi(a3, &wrap); |
| 3184 | __ GetObjectType(a3, t0, t0); |
| 3185 | __ Branch(&wrap, lt, t0, Operand(FIRST_SPEC_OBJECT_TYPE)); |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3186 | } else { |
| 3187 | __ jmp(&wrap); |
| 3188 | } |
| 3189 | |
| 3190 | __ bind(&cont); |
| 3191 | } |
machenbach@chromium.org | e31286d | 2014-01-15 10:29:52 +0000 | [diff] [blame] | 3192 | __ InvokeFunction(a1, actual, JUMP_FUNCTION, NullCallWrapper()); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3193 | |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3194 | if (NeedsChecks()) { |
| 3195 | // Slow-case: Non-function called. |
| 3196 | __ bind(&slow); |
| 3197 | if (RecordCallTarget()) { |
| 3198 | // If there is a call target cache, mark it megamorphic in the |
| 3199 | // non-function case. MegamorphicSentinel is an immortal immovable |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 3200 | // object (megamorphic symbol) so no write barrier is needed. |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3201 | ASSERT_EQ(*TypeFeedbackInfo::MegamorphicSentinel(masm->isolate()), |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 3202 | masm->isolate()->heap()->megamorphic_symbol()); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3203 | __ sll(t1, a3, kPointerSizeLog2 - kSmiTagSize); |
| 3204 | __ Addu(t1, a2, Operand(t1)); |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 3205 | __ LoadRoot(at, Heap::kMegamorphicSymbolRootIndex); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3206 | __ sw(at, FieldMemOperand(t1, FixedArray::kHeaderSize)); |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3207 | } |
| 3208 | // Check for function proxy. |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3209 | __ Branch(&non_function, ne, t0, Operand(JS_FUNCTION_PROXY_TYPE)); |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3210 | __ push(a1); // Put proxy as additional argument. |
| 3211 | __ li(a0, Operand(argc_ + 1, RelocInfo::NONE32)); |
| 3212 | __ li(a2, Operand(0, RelocInfo::NONE32)); |
| 3213 | __ GetBuiltinFunction(a1, Builtins::CALL_FUNCTION_PROXY); |
| 3214 | { |
| 3215 | Handle<Code> adaptor = |
| 3216 | masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
| 3217 | __ Jump(adaptor, RelocInfo::CODE_TARGET); |
| 3218 | } |
| 3219 | |
| 3220 | // CALL_NON_FUNCTION expects the non-function callee as receiver (instead |
| 3221 | // of the original receiver from the call site). |
| 3222 | __ bind(&non_function); |
| 3223 | __ sw(a1, MemOperand(sp, argc_ * kPointerSize)); |
| 3224 | __ li(a0, Operand(argc_)); // Set up the number of arguments. |
| 3225 | __ li(a2, Operand(0, RelocInfo::NONE32)); |
| 3226 | __ GetBuiltinFunction(a1, Builtins::CALL_NON_FUNCTION); |
| 3227 | __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
| 3228 | RelocInfo::CODE_TARGET); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3229 | } |
| 3230 | |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3231 | if (CallAsMethod()) { |
| 3232 | __ bind(&wrap); |
| 3233 | // Wrap the receiver and patch it back onto the stack. |
| 3234 | { FrameScope frame_scope(masm, StackFrame::INTERNAL); |
machenbach@chromium.org | 0e76f00 | 2014-02-03 07:23:16 +0000 | [diff] [blame] | 3235 | __ Push(a1, a3); |
machenbach@chromium.org | a03ba1e | 2014-02-01 08:54:43 +0000 | [diff] [blame] | 3236 | __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); |
| 3237 | __ pop(a1); |
| 3238 | } |
| 3239 | __ mov(a0, v0); |
| 3240 | __ sw(a0, MemOperand(sp, argc_ * kPointerSize)); |
| 3241 | __ jmp(&cont); |
| 3242 | } |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3243 | } |
| 3244 | |
| 3245 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3246 | void CallConstructStub::Generate(MacroAssembler* masm) { |
| 3247 | // a0 : number of arguments |
| 3248 | // a1 : the function to call |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3249 | // a2 : feedback vector |
| 3250 | // a3 : (only if a2 is not undefined) slot in feedback vector (Smi) |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3251 | Label slow, non_function_call; |
| 3252 | |
| 3253 | // Check that the function is not a smi. |
| 3254 | __ JumpIfSmi(a1, &non_function_call); |
| 3255 | // Check that the function is a JSFunction. |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3256 | __ GetObjectType(a1, t0, t0); |
| 3257 | __ Branch(&slow, ne, t0, Operand(JS_FUNCTION_TYPE)); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3258 | |
| 3259 | if (RecordCallTarget()) { |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 3260 | GenerateRecordCallTarget(masm); |
machenbach@chromium.org | 69f64b1 | 2014-03-20 01:04:55 +0000 | [diff] [blame] | 3261 | |
| 3262 | __ sll(at, a3, kPointerSizeLog2 - kSmiTagSize); |
| 3263 | __ Addu(t1, a2, at); |
| 3264 | if (FLAG_pretenuring_call_new) { |
| 3265 | // Put the AllocationSite from the feedback vector into a2. |
| 3266 | // By adding kPointerSize we encode that we know the AllocationSite |
| 3267 | // entry is at the feedback vector slot given by a3 + 1. |
| 3268 | __ lw(a2, FieldMemOperand(t1, FixedArray::kHeaderSize + kPointerSize)); |
| 3269 | } else { |
| 3270 | Label feedback_register_initialized; |
| 3271 | // Put the AllocationSite from the feedback vector into a2, or undefined. |
| 3272 | __ lw(a2, FieldMemOperand(t1, FixedArray::kHeaderSize)); |
| 3273 | __ lw(t1, FieldMemOperand(a2, AllocationSite::kMapOffset)); |
| 3274 | __ LoadRoot(at, Heap::kAllocationSiteMapRootIndex); |
| 3275 | __ Branch(&feedback_register_initialized, eq, t1, Operand(at)); |
| 3276 | __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); |
| 3277 | __ bind(&feedback_register_initialized); |
| 3278 | } |
| 3279 | |
| 3280 | __ AssertUndefinedOrAllocationSite(a2, t1); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3281 | } |
| 3282 | |
| 3283 | // Jump to the function-specific construct stub. |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3284 | Register jmp_reg = t0; |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3285 | __ lw(jmp_reg, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 3286 | __ lw(jmp_reg, FieldMemOperand(jmp_reg, |
| 3287 | SharedFunctionInfo::kConstructStubOffset)); |
| 3288 | __ Addu(at, jmp_reg, Operand(Code::kHeaderSize - kHeapObjectTag)); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3289 | __ Jump(at); |
| 3290 | |
| 3291 | // a0: number of arguments |
| 3292 | // a1: called object |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3293 | // t0: object type |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3294 | Label do_call; |
| 3295 | __ bind(&slow); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 3296 | __ Branch(&non_function_call, ne, t0, Operand(JS_FUNCTION_PROXY_TYPE)); |
machenbach@chromium.org | 26ca35c | 2014-01-16 08:22:55 +0000 | [diff] [blame] | 3297 | __ GetBuiltinFunction(a1, Builtins::CALL_FUNCTION_PROXY_AS_CONSTRUCTOR); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3298 | __ jmp(&do_call); |
| 3299 | |
| 3300 | __ bind(&non_function_call); |
machenbach@chromium.org | 26ca35c | 2014-01-16 08:22:55 +0000 | [diff] [blame] | 3301 | __ GetBuiltinFunction(a1, Builtins::CALL_NON_FUNCTION_AS_CONSTRUCTOR); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3302 | __ bind(&do_call); |
| 3303 | // Set expected number of arguments to zero (not changing r0). |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 3304 | __ li(a2, Operand(0, RelocInfo::NONE32)); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3305 | __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
| 3306 | RelocInfo::CODE_TARGET); |
| 3307 | } |
| 3308 | |
| 3309 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3310 | // StringCharCodeAtGenerator. |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3311 | void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3312 | Label flat_string; |
| 3313 | Label ascii_string; |
| 3314 | Label got_char_code; |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 3315 | Label sliced_string; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3316 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3317 | ASSERT(!t0.is(index_)); |
| 3318 | ASSERT(!t0.is(result_)); |
| 3319 | ASSERT(!t0.is(object_)); |
| 3320 | |
| 3321 | // If the receiver is a smi trigger the non-string case. |
| 3322 | __ JumpIfSmi(object_, receiver_not_string_); |
| 3323 | |
| 3324 | // Fetch the instance type of the receiver into result register. |
| 3325 | __ lw(result_, FieldMemOperand(object_, HeapObject::kMapOffset)); |
| 3326 | __ lbu(result_, FieldMemOperand(result_, Map::kInstanceTypeOffset)); |
| 3327 | // If the receiver is not a string trigger the non-string case. |
| 3328 | __ And(t0, result_, Operand(kIsNotStringMask)); |
| 3329 | __ Branch(receiver_not_string_, ne, t0, Operand(zero_reg)); |
| 3330 | |
| 3331 | // If the index is non-smi trigger the non-smi case. |
| 3332 | __ JumpIfNotSmi(index_, &index_not_smi_); |
| 3333 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3334 | __ bind(&got_smi_index_); |
| 3335 | |
| 3336 | // Check for index out of range. |
| 3337 | __ lw(t0, FieldMemOperand(object_, String::kLengthOffset)); |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 3338 | __ Branch(index_out_of_range_, ls, t0, Operand(index_)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3339 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3340 | __ sra(index_, index_, kSmiTagSize); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3341 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3342 | StringCharLoadGenerator::Generate(masm, |
| 3343 | object_, |
| 3344 | index_, |
| 3345 | result_, |
| 3346 | &call_runtime_); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3347 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3348 | __ sll(result_, result_, kSmiTagSize); |
| 3349 | __ bind(&exit_); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3350 | } |
| 3351 | |
| 3352 | |
| 3353 | void StringCharCodeAtGenerator::GenerateSlow( |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3354 | MacroAssembler* masm, |
| 3355 | const RuntimeCallHelper& call_helper) { |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 3356 | __ Abort(kUnexpectedFallthroughToCharCodeAtSlowCase); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3357 | |
| 3358 | // Index is not a smi. |
| 3359 | __ bind(&index_not_smi_); |
| 3360 | // If index is a heap number, try converting it to an integer. |
| 3361 | __ CheckMap(index_, |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 3362 | result_, |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3363 | Heap::kHeapNumberMapRootIndex, |
| 3364 | index_not_number_, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3365 | DONT_DO_SMI_CHECK); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3366 | call_helper.BeforeCall(masm); |
| 3367 | // Consumed by runtime conversion function: |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 3368 | __ Push(object_, index_); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3369 | if (index_flags_ == STRING_INDEX_IS_NUMBER) { |
| 3370 | __ CallRuntime(Runtime::kNumberToIntegerMapMinusZero, 1); |
| 3371 | } else { |
| 3372 | ASSERT(index_flags_ == STRING_INDEX_IS_ARRAY_INDEX); |
| 3373 | // NumberToSmi discards numbers that are not exact integers. |
machenbach@chromium.org | 895f00d | 2014-03-27 01:04:43 +0000 | [diff] [blame] | 3374 | __ CallRuntime(Runtime::kHiddenNumberToSmi, 1); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3375 | } |
| 3376 | |
| 3377 | // Save the conversion result before the pop instructions below |
| 3378 | // have a chance to overwrite it. |
| 3379 | |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 3380 | __ Move(index_, v0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3381 | __ pop(object_); |
| 3382 | // Reload the instance type. |
| 3383 | __ lw(result_, FieldMemOperand(object_, HeapObject::kMapOffset)); |
| 3384 | __ lbu(result_, FieldMemOperand(result_, Map::kInstanceTypeOffset)); |
| 3385 | call_helper.AfterCall(masm); |
| 3386 | // If index is still not a smi, it must be out of range. |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 3387 | __ JumpIfNotSmi(index_, index_out_of_range_); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3388 | // Otherwise, return to the fast path. |
| 3389 | __ Branch(&got_smi_index_); |
| 3390 | |
| 3391 | // Call runtime. We get here when the receiver is a string and the |
| 3392 | // index is a number, but the code of getting the actual character |
| 3393 | // is too complex (e.g., when the string needs to be flattened). |
| 3394 | __ bind(&call_runtime_); |
| 3395 | call_helper.BeforeCall(masm); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3396 | __ sll(index_, index_, kSmiTagSize); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3397 | __ Push(object_, index_); |
machenbach@chromium.org | 9b95fd7 | 2014-03-26 01:04:35 +0000 | [diff] [blame] | 3398 | __ CallRuntime(Runtime::kHiddenStringCharCodeAt, 2); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3399 | |
| 3400 | __ Move(result_, v0); |
| 3401 | |
| 3402 | call_helper.AfterCall(masm); |
| 3403 | __ jmp(&exit_); |
| 3404 | |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 3405 | __ Abort(kUnexpectedFallthroughFromCharCodeAtSlowCase); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3406 | } |
| 3407 | |
| 3408 | |
| 3409 | // ------------------------------------------------------------------------- |
| 3410 | // StringCharFromCodeGenerator |
| 3411 | |
| 3412 | void StringCharFromCodeGenerator::GenerateFast(MacroAssembler* masm) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3413 | // Fast case of Heap::LookupSingleCharacterStringFromCode. |
| 3414 | |
| 3415 | ASSERT(!t0.is(result_)); |
| 3416 | ASSERT(!t0.is(code_)); |
| 3417 | |
| 3418 | STATIC_ASSERT(kSmiTag == 0); |
| 3419 | STATIC_ASSERT(kSmiShiftSize == 0); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 3420 | ASSERT(IsPowerOf2(String::kMaxOneByteCharCode + 1)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3421 | __ And(t0, |
| 3422 | code_, |
| 3423 | Operand(kSmiTagMask | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 3424 | ((~String::kMaxOneByteCharCode) << kSmiTagSize))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3425 | __ Branch(&slow_case_, ne, t0, Operand(zero_reg)); |
| 3426 | |
| 3427 | __ LoadRoot(result_, Heap::kSingleCharacterStringCacheRootIndex); |
| 3428 | // At this point code register contains smi tagged ASCII char code. |
| 3429 | STATIC_ASSERT(kSmiTag == 0); |
| 3430 | __ sll(t0, code_, kPointerSizeLog2 - kSmiTagSize); |
| 3431 | __ Addu(result_, result_, t0); |
| 3432 | __ lw(result_, FieldMemOperand(result_, FixedArray::kHeaderSize)); |
| 3433 | __ LoadRoot(t0, Heap::kUndefinedValueRootIndex); |
| 3434 | __ Branch(&slow_case_, eq, result_, Operand(t0)); |
| 3435 | __ bind(&exit_); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3436 | } |
| 3437 | |
| 3438 | |
| 3439 | void StringCharFromCodeGenerator::GenerateSlow( |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 3440 | MacroAssembler* masm, |
| 3441 | const RuntimeCallHelper& call_helper) { |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 3442 | __ Abort(kUnexpectedFallthroughToCharFromCodeSlowCase); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3443 | |
| 3444 | __ bind(&slow_case_); |
| 3445 | call_helper.BeforeCall(masm); |
| 3446 | __ push(code_); |
| 3447 | __ CallRuntime(Runtime::kCharFromCode, 1); |
| 3448 | __ Move(result_, v0); |
| 3449 | |
| 3450 | call_helper.AfterCall(masm); |
| 3451 | __ Branch(&exit_); |
| 3452 | |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 3453 | __ Abort(kUnexpectedFallthroughFromCharFromCodeSlowCase); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3454 | } |
| 3455 | |
| 3456 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3457 | enum CopyCharactersFlags { |
| 3458 | COPY_ASCII = 1, |
| 3459 | DEST_ALWAYS_ALIGNED = 2 |
| 3460 | }; |
| 3461 | |
| 3462 | |
| 3463 | void StringHelper::GenerateCopyCharactersLong(MacroAssembler* masm, |
| 3464 | Register dest, |
| 3465 | Register src, |
| 3466 | Register count, |
| 3467 | Register scratch1, |
| 3468 | Register scratch2, |
| 3469 | Register scratch3, |
| 3470 | Register scratch4, |
| 3471 | Register scratch5, |
| 3472 | int flags) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3473 | bool ascii = (flags & COPY_ASCII) != 0; |
| 3474 | bool dest_always_aligned = (flags & DEST_ALWAYS_ALIGNED) != 0; |
| 3475 | |
| 3476 | if (dest_always_aligned && FLAG_debug_code) { |
| 3477 | // Check that destination is actually word aligned if the flag says |
| 3478 | // that it is. |
| 3479 | __ And(scratch4, dest, Operand(kPointerAlignmentMask)); |
| 3480 | __ Check(eq, |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 3481 | kDestinationOfCopyNotAligned, |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3482 | scratch4, |
| 3483 | Operand(zero_reg)); |
| 3484 | } |
| 3485 | |
| 3486 | const int kReadAlignment = 4; |
| 3487 | const int kReadAlignmentMask = kReadAlignment - 1; |
| 3488 | // Ensure that reading an entire aligned word containing the last character |
| 3489 | // of a string will not read outside the allocated area (because we pad up |
| 3490 | // to kObjectAlignment). |
| 3491 | STATIC_ASSERT(kObjectAlignment >= kReadAlignment); |
| 3492 | // Assumes word reads and writes are little endian. |
| 3493 | // Nothing to do for zero characters. |
| 3494 | Label done; |
| 3495 | |
| 3496 | if (!ascii) { |
| 3497 | __ addu(count, count, count); |
| 3498 | } |
| 3499 | __ Branch(&done, eq, count, Operand(zero_reg)); |
| 3500 | |
| 3501 | Label byte_loop; |
| 3502 | // Must copy at least eight bytes, otherwise just do it one byte at a time. |
| 3503 | __ Subu(scratch1, count, Operand(8)); |
| 3504 | __ Addu(count, dest, Operand(count)); |
| 3505 | Register limit = count; // Read until src equals this. |
| 3506 | __ Branch(&byte_loop, lt, scratch1, Operand(zero_reg)); |
| 3507 | |
| 3508 | if (!dest_always_aligned) { |
| 3509 | // Align dest by byte copying. Copies between zero and three bytes. |
| 3510 | __ And(scratch4, dest, Operand(kReadAlignmentMask)); |
| 3511 | Label dest_aligned; |
| 3512 | __ Branch(&dest_aligned, eq, scratch4, Operand(zero_reg)); |
| 3513 | Label aligned_loop; |
| 3514 | __ bind(&aligned_loop); |
| 3515 | __ lbu(scratch1, MemOperand(src)); |
| 3516 | __ addiu(src, src, 1); |
| 3517 | __ sb(scratch1, MemOperand(dest)); |
| 3518 | __ addiu(dest, dest, 1); |
| 3519 | __ addiu(scratch4, scratch4, 1); |
| 3520 | __ Branch(&aligned_loop, le, scratch4, Operand(kReadAlignmentMask)); |
| 3521 | __ bind(&dest_aligned); |
| 3522 | } |
| 3523 | |
| 3524 | Label simple_loop; |
| 3525 | |
| 3526 | __ And(scratch4, src, Operand(kReadAlignmentMask)); |
| 3527 | __ Branch(&simple_loop, eq, scratch4, Operand(zero_reg)); |
| 3528 | |
| 3529 | // Loop for src/dst that are not aligned the same way. |
| 3530 | // This loop uses lwl and lwr instructions. These instructions |
| 3531 | // depend on the endianness, and the implementation assumes little-endian. |
| 3532 | { |
| 3533 | Label loop; |
| 3534 | __ bind(&loop); |
| 3535 | __ lwr(scratch1, MemOperand(src)); |
| 3536 | __ Addu(src, src, Operand(kReadAlignment)); |
| 3537 | __ lwl(scratch1, MemOperand(src, -1)); |
| 3538 | __ sw(scratch1, MemOperand(dest)); |
| 3539 | __ Addu(dest, dest, Operand(kReadAlignment)); |
| 3540 | __ Subu(scratch2, limit, dest); |
| 3541 | __ Branch(&loop, ge, scratch2, Operand(kReadAlignment)); |
| 3542 | } |
| 3543 | |
| 3544 | __ Branch(&byte_loop); |
| 3545 | |
| 3546 | // Simple loop. |
| 3547 | // Copy words from src to dest, until less than four bytes left. |
| 3548 | // Both src and dest are word aligned. |
| 3549 | __ bind(&simple_loop); |
| 3550 | { |
| 3551 | Label loop; |
| 3552 | __ bind(&loop); |
| 3553 | __ lw(scratch1, MemOperand(src)); |
| 3554 | __ Addu(src, src, Operand(kReadAlignment)); |
| 3555 | __ sw(scratch1, MemOperand(dest)); |
| 3556 | __ Addu(dest, dest, Operand(kReadAlignment)); |
| 3557 | __ Subu(scratch2, limit, dest); |
| 3558 | __ Branch(&loop, ge, scratch2, Operand(kReadAlignment)); |
| 3559 | } |
| 3560 | |
| 3561 | // Copy bytes from src to dest until dest hits limit. |
| 3562 | __ bind(&byte_loop); |
| 3563 | // Test if dest has already reached the limit. |
| 3564 | __ Branch(&done, ge, dest, Operand(limit)); |
| 3565 | __ lbu(scratch1, MemOperand(src)); |
| 3566 | __ addiu(src, src, 1); |
| 3567 | __ sb(scratch1, MemOperand(dest)); |
| 3568 | __ addiu(dest, dest, 1); |
| 3569 | __ Branch(&byte_loop); |
| 3570 | |
| 3571 | __ bind(&done); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3572 | } |
| 3573 | |
| 3574 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3575 | void StringHelper::GenerateHashInit(MacroAssembler* masm, |
rossberg@chromium.org | fab1498 | 2012-01-05 15:02:15 +0000 | [diff] [blame] | 3576 | Register hash, |
| 3577 | Register character) { |
| 3578 | // hash = seed + character + ((seed + character) << 10); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3579 | __ LoadRoot(hash, Heap::kHashSeedRootIndex); |
rossberg@chromium.org | fab1498 | 2012-01-05 15:02:15 +0000 | [diff] [blame] | 3580 | // Untag smi seed and add the character. |
| 3581 | __ SmiUntag(hash); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3582 | __ addu(hash, hash, character); |
rossberg@chromium.org | fab1498 | 2012-01-05 15:02:15 +0000 | [diff] [blame] | 3583 | __ sll(at, hash, 10); |
| 3584 | __ addu(hash, hash, at); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3585 | // hash ^= hash >> 6; |
danno@chromium.org | 2c45679 | 2011-11-11 12:00:53 +0000 | [diff] [blame] | 3586 | __ srl(at, hash, 6); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3587 | __ xor_(hash, hash, at); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3588 | } |
| 3589 | |
| 3590 | |
| 3591 | void StringHelper::GenerateHashAddCharacter(MacroAssembler* masm, |
rossberg@chromium.org | fab1498 | 2012-01-05 15:02:15 +0000 | [diff] [blame] | 3592 | Register hash, |
| 3593 | Register character) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3594 | // hash += character; |
| 3595 | __ addu(hash, hash, character); |
| 3596 | // hash += hash << 10; |
| 3597 | __ sll(at, hash, 10); |
| 3598 | __ addu(hash, hash, at); |
| 3599 | // hash ^= hash >> 6; |
danno@chromium.org | 2c45679 | 2011-11-11 12:00:53 +0000 | [diff] [blame] | 3600 | __ srl(at, hash, 6); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3601 | __ xor_(hash, hash, at); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3602 | } |
| 3603 | |
| 3604 | |
| 3605 | void StringHelper::GenerateHashGetHash(MacroAssembler* masm, |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3606 | Register hash) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3607 | // hash += hash << 3; |
| 3608 | __ sll(at, hash, 3); |
| 3609 | __ addu(hash, hash, at); |
| 3610 | // hash ^= hash >> 11; |
danno@chromium.org | 2c45679 | 2011-11-11 12:00:53 +0000 | [diff] [blame] | 3611 | __ srl(at, hash, 11); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3612 | __ xor_(hash, hash, at); |
| 3613 | // hash += hash << 15; |
| 3614 | __ sll(at, hash, 15); |
| 3615 | __ addu(hash, hash, at); |
| 3616 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3617 | __ li(at, Operand(String::kHashBitMask)); |
danno@chromium.org | 2c45679 | 2011-11-11 12:00:53 +0000 | [diff] [blame] | 3618 | __ and_(hash, hash, at); |
| 3619 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3620 | // if (hash == 0) hash = 27; |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3621 | __ ori(at, zero_reg, StringHasher::kZeroHash); |
mstarzinger@chromium.org | 3233d2f | 2012-03-14 11:16:03 +0000 | [diff] [blame] | 3622 | __ Movz(hash, at, hash); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3623 | } |
| 3624 | |
| 3625 | |
| 3626 | void SubStringStub::Generate(MacroAssembler* masm) { |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3627 | Label runtime; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3628 | // Stack frame on entry. |
| 3629 | // ra: return address |
| 3630 | // sp[0]: to |
| 3631 | // sp[4]: from |
| 3632 | // sp[8]: string |
| 3633 | |
| 3634 | // This stub is called from the native-call %_SubString(...), so |
| 3635 | // nothing can be assumed about the arguments. It is tested that: |
| 3636 | // "string" is a sequential string, |
| 3637 | // both "from" and "to" are smis, and |
| 3638 | // 0 <= from <= to <= string.length. |
| 3639 | // If any of these assumptions fail, we call the runtime system. |
| 3640 | |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 3641 | const int kToOffset = 0 * kPointerSize; |
| 3642 | const int kFromOffset = 1 * kPointerSize; |
| 3643 | const int kStringOffset = 2 * kPointerSize; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3644 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3645 | __ lw(a2, MemOperand(sp, kToOffset)); |
| 3646 | __ lw(a3, MemOperand(sp, kFromOffset)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3647 | STATIC_ASSERT(kFromOffset == kToOffset + 4); |
| 3648 | STATIC_ASSERT(kSmiTag == 0); |
| 3649 | STATIC_ASSERT(kSmiTagSize + kSmiShiftSize == 1); |
| 3650 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3651 | // Utilize delay slots. SmiUntag doesn't emit a jump, everything else is |
| 3652 | // safe in this case. |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 3653 | __ UntagAndJumpIfNotSmi(a2, a2, &runtime); |
| 3654 | __ UntagAndJumpIfNotSmi(a3, a3, &runtime); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3655 | // Both a2 and a3 are untagged integers. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3656 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3657 | __ Branch(&runtime, lt, a3, Operand(zero_reg)); // From < 0. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3658 | |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 3659 | __ Branch(&runtime, gt, a3, Operand(a2)); // Fail if from > to. |
| 3660 | __ Subu(a2, a2, a3); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3661 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3662 | // Make sure first argument is a string. |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 3663 | __ lw(v0, MemOperand(sp, kStringOffset)); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 3664 | __ JumpIfSmi(v0, &runtime); |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 3665 | __ lw(a1, FieldMemOperand(v0, HeapObject::kMapOffset)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3666 | __ lbu(a1, FieldMemOperand(a1, Map::kInstanceTypeOffset)); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 3667 | __ And(t0, a1, Operand(kIsNotStringMask)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3668 | |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 3669 | __ Branch(&runtime, ne, t0, Operand(zero_reg)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3670 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 3671 | Label single_char; |
| 3672 | __ Branch(&single_char, eq, a2, Operand(1)); |
| 3673 | |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 3674 | // Short-cut for the case of trivial substring. |
| 3675 | Label return_v0; |
| 3676 | // v0: original string |
| 3677 | // a2: result string length |
| 3678 | __ lw(t0, FieldMemOperand(v0, String::kLengthOffset)); |
| 3679 | __ sra(t0, t0, 1); |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3680 | // Return original string. |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 3681 | __ Branch(&return_v0, eq, a2, Operand(t0)); |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3682 | // Longer than original string's length or negative: unsafe arguments. |
| 3683 | __ Branch(&runtime, hi, a2, Operand(t0)); |
| 3684 | // Shorter than original string's length: an actual substring. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3685 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3686 | // Deal with different string types: update the index if necessary |
| 3687 | // and put the underlying string into t1. |
| 3688 | // v0: original string |
| 3689 | // a1: instance type |
| 3690 | // a2: length |
| 3691 | // a3: from index (untagged) |
| 3692 | Label underlying_unpacked, sliced_string, seq_or_external_string; |
| 3693 | // If the string is not indirect, it can only be sequential or external. |
| 3694 | STATIC_ASSERT(kIsIndirectStringMask == (kSlicedStringTag & kConsStringTag)); |
| 3695 | STATIC_ASSERT(kIsIndirectStringMask != 0); |
| 3696 | __ And(t0, a1, Operand(kIsIndirectStringMask)); |
| 3697 | __ Branch(USE_DELAY_SLOT, &seq_or_external_string, eq, t0, Operand(zero_reg)); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 3698 | // t0 is used as a scratch register and can be overwritten in either case. |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3699 | __ And(t0, a1, Operand(kSlicedNotConsMask)); |
| 3700 | __ Branch(&sliced_string, ne, t0, Operand(zero_reg)); |
| 3701 | // Cons string. Check whether it is flat, then fetch first part. |
| 3702 | __ lw(t1, FieldMemOperand(v0, ConsString::kSecondOffset)); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3703 | __ LoadRoot(t0, Heap::kempty_stringRootIndex); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3704 | __ Branch(&runtime, ne, t1, Operand(t0)); |
| 3705 | __ lw(t1, FieldMemOperand(v0, ConsString::kFirstOffset)); |
| 3706 | // Update instance type. |
| 3707 | __ lw(a1, FieldMemOperand(t1, HeapObject::kMapOffset)); |
| 3708 | __ lbu(a1, FieldMemOperand(a1, Map::kInstanceTypeOffset)); |
| 3709 | __ jmp(&underlying_unpacked); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3710 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3711 | __ bind(&sliced_string); |
| 3712 | // Sliced string. Fetch parent and correct start index by offset. |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3713 | __ lw(t1, FieldMemOperand(v0, SlicedString::kParentOffset)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3714 | __ lw(t0, FieldMemOperand(v0, SlicedString::kOffsetOffset)); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3715 | __ sra(t0, t0, 1); // Add offset to index. |
| 3716 | __ Addu(a3, a3, t0); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3717 | // Update instance type. |
| 3718 | __ lw(a1, FieldMemOperand(t1, HeapObject::kMapOffset)); |
| 3719 | __ lbu(a1, FieldMemOperand(a1, Map::kInstanceTypeOffset)); |
| 3720 | __ jmp(&underlying_unpacked); |
| 3721 | |
| 3722 | __ bind(&seq_or_external_string); |
| 3723 | // Sequential or external string. Just move string to the expected register. |
| 3724 | __ mov(t1, v0); |
| 3725 | |
| 3726 | __ bind(&underlying_unpacked); |
| 3727 | |
| 3728 | if (FLAG_string_slices) { |
| 3729 | Label copy_routine; |
| 3730 | // t1: underlying subject string |
| 3731 | // a1: instance type of underlying subject string |
| 3732 | // a2: length |
| 3733 | // a3: adjusted start index (untagged) |
| 3734 | // Short slice. Copy instead of slicing. |
| 3735 | __ Branch(©_routine, lt, a2, Operand(SlicedString::kMinLength)); |
| 3736 | // Allocate new sliced string. At this point we do not reload the instance |
| 3737 | // type including the string encoding because we simply rely on the info |
| 3738 | // provided by the original string. It does not matter if the original |
| 3739 | // string's encoding is wrong because we always have to recheck encoding of |
| 3740 | // the newly created string's parent anyways due to externalized strings. |
| 3741 | Label two_byte_slice, set_slice_header; |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3742 | STATIC_ASSERT((kStringEncodingMask & kOneByteStringTag) != 0); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3743 | STATIC_ASSERT((kStringEncodingMask & kTwoByteStringTag) == 0); |
| 3744 | __ And(t0, a1, Operand(kStringEncodingMask)); |
| 3745 | __ Branch(&two_byte_slice, eq, t0, Operand(zero_reg)); |
| 3746 | __ AllocateAsciiSlicedString(v0, a2, t2, t3, &runtime); |
| 3747 | __ jmp(&set_slice_header); |
| 3748 | __ bind(&two_byte_slice); |
| 3749 | __ AllocateTwoByteSlicedString(v0, a2, t2, t3, &runtime); |
| 3750 | __ bind(&set_slice_header); |
| 3751 | __ sll(a3, a3, 1); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3752 | __ sw(t1, FieldMemOperand(v0, SlicedString::kParentOffset)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3753 | __ sw(a3, FieldMemOperand(v0, SlicedString::kOffsetOffset)); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3754 | __ jmp(&return_v0); |
| 3755 | |
| 3756 | __ bind(©_routine); |
| 3757 | } |
| 3758 | |
| 3759 | // t1: underlying subject string |
| 3760 | // a1: instance type of underlying subject string |
| 3761 | // a2: length |
| 3762 | // a3: adjusted start index (untagged) |
| 3763 | Label two_byte_sequential, sequential_string, allocate_result; |
| 3764 | STATIC_ASSERT(kExternalStringTag != 0); |
| 3765 | STATIC_ASSERT(kSeqStringTag == 0); |
| 3766 | __ And(t0, a1, Operand(kExternalStringTag)); |
| 3767 | __ Branch(&sequential_string, eq, t0, Operand(zero_reg)); |
| 3768 | |
| 3769 | // Handle external string. |
| 3770 | // Rule out short external strings. |
| 3771 | STATIC_CHECK(kShortExternalStringTag != 0); |
| 3772 | __ And(t0, a1, Operand(kShortExternalStringTag)); |
| 3773 | __ Branch(&runtime, ne, t0, Operand(zero_reg)); |
| 3774 | __ lw(t1, FieldMemOperand(t1, ExternalString::kResourceDataOffset)); |
| 3775 | // t1 already points to the first character of underlying string. |
| 3776 | __ jmp(&allocate_result); |
| 3777 | |
| 3778 | __ bind(&sequential_string); |
| 3779 | // Locate first character of underlying subject string. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 3780 | STATIC_ASSERT(SeqTwoByteString::kHeaderSize == SeqOneByteString::kHeaderSize); |
| 3781 | __ Addu(t1, t1, Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3782 | |
| 3783 | __ bind(&allocate_result); |
| 3784 | // Sequential acii string. Allocate the result. |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 3785 | STATIC_ASSERT((kOneByteStringTag & kStringEncodingMask) != 0); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3786 | __ And(t0, a1, Operand(kStringEncodingMask)); |
| 3787 | __ Branch(&two_byte_sequential, eq, t0, Operand(zero_reg)); |
| 3788 | |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 3789 | // Allocate and copy the resulting ASCII string. |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3790 | __ AllocateAsciiString(v0, a2, t0, t2, t3, &runtime); |
| 3791 | |
| 3792 | // Locate first character of substring to copy. |
| 3793 | __ Addu(t1, t1, a3); |
| 3794 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3795 | // Locate first character of result. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 3796 | __ Addu(a1, v0, Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3797 | |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 3798 | // v0: result string |
| 3799 | // a1: first character of result string |
| 3800 | // a2: result string length |
| 3801 | // t1: first character of substring to copy |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 3802 | STATIC_ASSERT((SeqOneByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3803 | StringHelper::GenerateCopyCharactersLong( |
| 3804 | masm, a1, t1, a2, a3, t0, t2, t3, t4, COPY_ASCII | DEST_ALWAYS_ALIGNED); |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 3805 | __ jmp(&return_v0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3806 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3807 | // Allocate and copy the resulting two-byte string. |
| 3808 | __ bind(&two_byte_sequential); |
| 3809 | __ AllocateTwoByteString(v0, a2, t0, t2, t3, &runtime); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3810 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3811 | // Locate first character of substring to copy. |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 3812 | STATIC_ASSERT(kSmiTagSize == 1 && kSmiTag == 0); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3813 | __ sll(t0, a3, 1); |
| 3814 | __ Addu(t1, t1, t0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3815 | // Locate first character of result. |
| 3816 | __ Addu(a1, v0, Operand(SeqTwoByteString::kHeaderSize - kHeapObjectTag)); |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 3817 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3818 | // v0: result string. |
| 3819 | // a1: first character of result. |
| 3820 | // a2: result length. |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 3821 | // t1: first character of substring to copy. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3822 | STATIC_ASSERT((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
| 3823 | StringHelper::GenerateCopyCharactersLong( |
| 3824 | masm, a1, t1, a2, a3, t0, t2, t3, t4, DEST_ALWAYS_ALIGNED); |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 3825 | |
| 3826 | __ bind(&return_v0); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3827 | Counters* counters = masm->isolate()->counters(); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3828 | __ IncrementCounter(counters->sub_string_native(), 1, a3, t0); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3829 | __ DropAndRet(3); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3830 | |
| 3831 | // Just jump to runtime to create the sub string. |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 3832 | __ bind(&runtime); |
machenbach@chromium.org | 9b95fd7 | 2014-03-26 01:04:35 +0000 | [diff] [blame] | 3833 | __ TailCallRuntime(Runtime::kHiddenSubString, 3, 1); |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 3834 | |
| 3835 | __ bind(&single_char); |
| 3836 | // v0: original string |
| 3837 | // a1: instance type |
| 3838 | // a2: length |
| 3839 | // a3: from index (untagged) |
| 3840 | __ SmiTag(a3, a3); |
| 3841 | StringCharAtGenerator generator( |
| 3842 | v0, a3, a2, v0, &runtime, &runtime, &runtime, STRING_INDEX_IS_NUMBER); |
| 3843 | generator.GenerateFast(masm); |
| 3844 | __ DropAndRet(3); |
| 3845 | generator.SkipSlow(masm, &runtime); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3846 | } |
| 3847 | |
| 3848 | |
| 3849 | void StringCompareStub::GenerateFlatAsciiStringEquals(MacroAssembler* masm, |
| 3850 | Register left, |
| 3851 | Register right, |
| 3852 | Register scratch1, |
| 3853 | Register scratch2, |
| 3854 | Register scratch3) { |
| 3855 | Register length = scratch1; |
| 3856 | |
| 3857 | // Compare lengths. |
| 3858 | Label strings_not_equal, check_zero_length; |
| 3859 | __ lw(length, FieldMemOperand(left, String::kLengthOffset)); |
| 3860 | __ lw(scratch2, FieldMemOperand(right, String::kLengthOffset)); |
| 3861 | __ Branch(&check_zero_length, eq, length, Operand(scratch2)); |
| 3862 | __ bind(&strings_not_equal); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 3863 | ASSERT(is_int16(NOT_EQUAL)); |
| 3864 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3865 | __ li(v0, Operand(Smi::FromInt(NOT_EQUAL))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3866 | |
| 3867 | // Check if the length is zero. |
| 3868 | Label compare_chars; |
| 3869 | __ bind(&check_zero_length); |
| 3870 | STATIC_ASSERT(kSmiTag == 0); |
| 3871 | __ Branch(&compare_chars, ne, length, Operand(zero_reg)); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 3872 | ASSERT(is_int16(EQUAL)); |
| 3873 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3874 | __ li(v0, Operand(Smi::FromInt(EQUAL))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3875 | |
| 3876 | // Compare characters. |
| 3877 | __ bind(&compare_chars); |
| 3878 | |
| 3879 | GenerateAsciiCharsCompareLoop(masm, |
| 3880 | left, right, length, scratch2, scratch3, v0, |
| 3881 | &strings_not_equal); |
| 3882 | |
| 3883 | // Characters are equal. |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 3884 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3885 | __ li(v0, Operand(Smi::FromInt(EQUAL))); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3886 | } |
| 3887 | |
| 3888 | |
| 3889 | void StringCompareStub::GenerateCompareFlatAsciiStrings(MacroAssembler* masm, |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3890 | Register left, |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3891 | Register right, |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3892 | Register scratch1, |
| 3893 | Register scratch2, |
| 3894 | Register scratch3, |
| 3895 | Register scratch4) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3896 | Label result_not_equal, compare_lengths; |
| 3897 | // Find minimum length and length difference. |
| 3898 | __ lw(scratch1, FieldMemOperand(left, String::kLengthOffset)); |
| 3899 | __ lw(scratch2, FieldMemOperand(right, String::kLengthOffset)); |
| 3900 | __ Subu(scratch3, scratch1, Operand(scratch2)); |
| 3901 | Register length_delta = scratch3; |
| 3902 | __ slt(scratch4, scratch2, scratch1); |
mstarzinger@chromium.org | 3233d2f | 2012-03-14 11:16:03 +0000 | [diff] [blame] | 3903 | __ Movn(scratch1, scratch2, scratch4); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3904 | Register min_length = scratch1; |
| 3905 | STATIC_ASSERT(kSmiTag == 0); |
| 3906 | __ Branch(&compare_lengths, eq, min_length, Operand(zero_reg)); |
| 3907 | |
| 3908 | // Compare loop. |
| 3909 | GenerateAsciiCharsCompareLoop(masm, |
| 3910 | left, right, min_length, scratch2, scratch4, v0, |
| 3911 | &result_not_equal); |
| 3912 | |
| 3913 | // Compare lengths - strings up to min-length are equal. |
| 3914 | __ bind(&compare_lengths); |
| 3915 | ASSERT(Smi::FromInt(EQUAL) == static_cast<Smi*>(0)); |
| 3916 | // Use length_delta as result if it's zero. |
| 3917 | __ mov(scratch2, length_delta); |
| 3918 | __ mov(scratch4, zero_reg); |
| 3919 | __ mov(v0, zero_reg); |
| 3920 | |
| 3921 | __ bind(&result_not_equal); |
| 3922 | // Conditionally update the result based either on length_delta or |
| 3923 | // the last comparion performed in the loop above. |
| 3924 | Label ret; |
| 3925 | __ Branch(&ret, eq, scratch2, Operand(scratch4)); |
| 3926 | __ li(v0, Operand(Smi::FromInt(GREATER))); |
| 3927 | __ Branch(&ret, gt, scratch2, Operand(scratch4)); |
| 3928 | __ li(v0, Operand(Smi::FromInt(LESS))); |
| 3929 | __ bind(&ret); |
| 3930 | __ Ret(); |
| 3931 | } |
| 3932 | |
| 3933 | |
| 3934 | void StringCompareStub::GenerateAsciiCharsCompareLoop( |
| 3935 | MacroAssembler* masm, |
| 3936 | Register left, |
| 3937 | Register right, |
| 3938 | Register length, |
| 3939 | Register scratch1, |
| 3940 | Register scratch2, |
| 3941 | Register scratch3, |
| 3942 | Label* chars_not_equal) { |
| 3943 | // Change index to run from -length to -1 by adding length to string |
| 3944 | // start. This means that loop ends when index reaches zero, which |
| 3945 | // doesn't need an additional compare. |
| 3946 | __ SmiUntag(length); |
| 3947 | __ Addu(scratch1, length, |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 3948 | Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3949 | __ Addu(left, left, Operand(scratch1)); |
| 3950 | __ Addu(right, right, Operand(scratch1)); |
| 3951 | __ Subu(length, zero_reg, length); |
| 3952 | Register index = length; // index = -length; |
| 3953 | |
| 3954 | |
| 3955 | // Compare loop. |
| 3956 | Label loop; |
| 3957 | __ bind(&loop); |
| 3958 | __ Addu(scratch3, left, index); |
| 3959 | __ lbu(scratch1, MemOperand(scratch3)); |
| 3960 | __ Addu(scratch3, right, index); |
| 3961 | __ lbu(scratch2, MemOperand(scratch3)); |
| 3962 | __ Branch(chars_not_equal, ne, scratch1, Operand(scratch2)); |
| 3963 | __ Addu(index, index, 1); |
| 3964 | __ Branch(&loop, ne, index, Operand(zero_reg)); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3965 | } |
| 3966 | |
| 3967 | |
| 3968 | void StringCompareStub::Generate(MacroAssembler* masm) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3969 | Label runtime; |
| 3970 | |
| 3971 | Counters* counters = masm->isolate()->counters(); |
| 3972 | |
| 3973 | // Stack frame on entry. |
| 3974 | // sp[0]: right string |
| 3975 | // sp[4]: left string |
| 3976 | __ lw(a1, MemOperand(sp, 1 * kPointerSize)); // Left. |
| 3977 | __ lw(a0, MemOperand(sp, 0 * kPointerSize)); // Right. |
| 3978 | |
| 3979 | Label not_same; |
| 3980 | __ Branch(¬_same, ne, a0, Operand(a1)); |
| 3981 | STATIC_ASSERT(EQUAL == 0); |
| 3982 | STATIC_ASSERT(kSmiTag == 0); |
| 3983 | __ li(v0, Operand(Smi::FromInt(EQUAL))); |
| 3984 | __ IncrementCounter(counters->string_compare_native(), 1, a1, a2); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 3985 | __ DropAndRet(2); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 3986 | |
| 3987 | __ bind(¬_same); |
| 3988 | |
| 3989 | // Check that both objects are sequential ASCII strings. |
| 3990 | __ JumpIfNotBothSequentialAsciiStrings(a1, a0, a2, a3, &runtime); |
| 3991 | |
| 3992 | // Compare flat ASCII strings natively. Remove arguments from stack first. |
| 3993 | __ IncrementCounter(counters->string_compare_native(), 1, a2, a3); |
| 3994 | __ Addu(sp, sp, Operand(2 * kPointerSize)); |
| 3995 | GenerateCompareFlatAsciiStrings(masm, a1, a0, a2, a3, t0, t1); |
| 3996 | |
| 3997 | __ bind(&runtime); |
machenbach@chromium.org | 9b95fd7 | 2014-03-26 01:04:35 +0000 | [diff] [blame] | 3998 | __ TailCallRuntime(Runtime::kHiddenStringCompare, 2, 1); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3999 | } |
| 4000 | |
| 4001 | |
machenbach@chromium.org | c8cbc43 | 2014-01-21 09:01:57 +0000 | [diff] [blame] | 4002 | void ArrayPushStub::Generate(MacroAssembler* masm) { |
| 4003 | Register receiver = a0; |
| 4004 | Register scratch = a1; |
| 4005 | |
| 4006 | int argc = arguments_count(); |
| 4007 | |
| 4008 | if (argc == 0) { |
| 4009 | // Nothing to do, just return the length. |
| 4010 | __ lw(v0, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
| 4011 | __ DropAndRet(argc + 1); |
| 4012 | return; |
| 4013 | } |
| 4014 | |
| 4015 | Isolate* isolate = masm->isolate(); |
| 4016 | |
| 4017 | if (argc != 1) { |
| 4018 | __ TailCallExternalReference( |
| 4019 | ExternalReference(Builtins::c_ArrayPush, isolate), argc + 1, 1); |
| 4020 | return; |
| 4021 | } |
| 4022 | |
| 4023 | Label call_builtin, attempt_to_grow_elements, with_write_barrier; |
| 4024 | |
| 4025 | Register elements = t2; |
| 4026 | Register end_elements = t1; |
| 4027 | // Get the elements array of the object. |
| 4028 | __ lw(elements, FieldMemOperand(receiver, JSArray::kElementsOffset)); |
| 4029 | |
| 4030 | if (IsFastSmiOrObjectElementsKind(elements_kind())) { |
| 4031 | // Check that the elements are in fast mode and writable. |
| 4032 | __ CheckMap(elements, |
| 4033 | scratch, |
| 4034 | Heap::kFixedArrayMapRootIndex, |
| 4035 | &call_builtin, |
| 4036 | DONT_DO_SMI_CHECK); |
| 4037 | } |
| 4038 | |
| 4039 | // Get the array's length into scratch and calculate new length. |
| 4040 | __ lw(scratch, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
| 4041 | __ Addu(scratch, scratch, Operand(Smi::FromInt(argc))); |
| 4042 | |
| 4043 | // Get the elements' length. |
| 4044 | __ lw(t0, FieldMemOperand(elements, FixedArray::kLengthOffset)); |
| 4045 | |
| 4046 | const int kEndElementsOffset = |
| 4047 | FixedArray::kHeaderSize - kHeapObjectTag - argc * kPointerSize; |
| 4048 | |
| 4049 | if (IsFastSmiOrObjectElementsKind(elements_kind())) { |
| 4050 | // Check if we could survive without allocation. |
| 4051 | __ Branch(&attempt_to_grow_elements, gt, scratch, Operand(t0)); |
| 4052 | |
| 4053 | // Check if value is a smi. |
| 4054 | __ lw(t0, MemOperand(sp, (argc - 1) * kPointerSize)); |
| 4055 | __ JumpIfNotSmi(t0, &with_write_barrier); |
| 4056 | |
| 4057 | // Store the value. |
| 4058 | // We may need a register containing the address end_elements below, |
| 4059 | // so write back the value in end_elements. |
| 4060 | __ sll(end_elements, scratch, kPointerSizeLog2 - kSmiTagSize); |
| 4061 | __ Addu(end_elements, elements, end_elements); |
| 4062 | __ Addu(end_elements, end_elements, kEndElementsOffset); |
| 4063 | __ sw(t0, MemOperand(end_elements)); |
| 4064 | } else { |
| 4065 | // Check if we could survive without allocation. |
| 4066 | __ Branch(&call_builtin, gt, scratch, Operand(t0)); |
| 4067 | |
| 4068 | __ lw(t0, MemOperand(sp, (argc - 1) * kPointerSize)); |
| 4069 | __ StoreNumberToDoubleElements(t0, scratch, elements, a3, t1, a2, |
| 4070 | &call_builtin, argc * kDoubleSize); |
| 4071 | } |
| 4072 | |
| 4073 | // Save new length. |
| 4074 | __ sw(scratch, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
| 4075 | __ mov(v0, scratch); |
| 4076 | __ DropAndRet(argc + 1); |
| 4077 | |
| 4078 | if (IsFastDoubleElementsKind(elements_kind())) { |
| 4079 | __ bind(&call_builtin); |
| 4080 | __ TailCallExternalReference( |
| 4081 | ExternalReference(Builtins::c_ArrayPush, isolate), argc + 1, 1); |
| 4082 | return; |
| 4083 | } |
| 4084 | |
| 4085 | __ bind(&with_write_barrier); |
| 4086 | |
| 4087 | if (IsFastSmiElementsKind(elements_kind())) { |
| 4088 | if (FLAG_trace_elements_transitions) __ jmp(&call_builtin); |
| 4089 | |
| 4090 | __ lw(t3, FieldMemOperand(t0, HeapObject::kMapOffset)); |
| 4091 | __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); |
| 4092 | __ Branch(&call_builtin, eq, t3, Operand(at)); |
| 4093 | |
| 4094 | ElementsKind target_kind = IsHoleyElementsKind(elements_kind()) |
| 4095 | ? FAST_HOLEY_ELEMENTS : FAST_ELEMENTS; |
| 4096 | __ lw(a3, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX)); |
| 4097 | __ lw(a3, FieldMemOperand(a3, GlobalObject::kNativeContextOffset)); |
| 4098 | __ lw(a3, ContextOperand(a3, Context::JS_ARRAY_MAPS_INDEX)); |
| 4099 | const int header_size = FixedArrayBase::kHeaderSize; |
| 4100 | // Verify that the object can be transitioned in place. |
| 4101 | const int origin_offset = header_size + elements_kind() * kPointerSize; |
| 4102 | __ lw(a2, FieldMemOperand(receiver, origin_offset)); |
| 4103 | __ lw(at, FieldMemOperand(a3, HeapObject::kMapOffset)); |
| 4104 | __ Branch(&call_builtin, ne, a2, Operand(at)); |
| 4105 | |
| 4106 | |
| 4107 | const int target_offset = header_size + target_kind * kPointerSize; |
| 4108 | __ lw(a3, FieldMemOperand(a3, target_offset)); |
| 4109 | __ mov(a2, receiver); |
| 4110 | ElementsTransitionGenerator::GenerateMapChangeElementsTransition( |
| 4111 | masm, DONT_TRACK_ALLOCATION_SITE, NULL); |
| 4112 | } |
| 4113 | |
| 4114 | // Save new length. |
| 4115 | __ sw(scratch, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
| 4116 | |
| 4117 | // Store the value. |
| 4118 | // We may need a register containing the address end_elements below, so write |
| 4119 | // back the value in end_elements. |
| 4120 | __ sll(end_elements, scratch, kPointerSizeLog2 - kSmiTagSize); |
| 4121 | __ Addu(end_elements, elements, end_elements); |
| 4122 | __ Addu(end_elements, end_elements, kEndElementsOffset); |
| 4123 | __ sw(t0, MemOperand(end_elements)); |
| 4124 | |
| 4125 | __ RecordWrite(elements, |
| 4126 | end_elements, |
| 4127 | t0, |
| 4128 | kRAHasNotBeenSaved, |
| 4129 | kDontSaveFPRegs, |
| 4130 | EMIT_REMEMBERED_SET, |
| 4131 | OMIT_SMI_CHECK); |
| 4132 | __ mov(v0, scratch); |
| 4133 | __ DropAndRet(argc + 1); |
| 4134 | |
| 4135 | __ bind(&attempt_to_grow_elements); |
| 4136 | // scratch: array's length + 1. |
| 4137 | |
| 4138 | if (!FLAG_inline_new) { |
| 4139 | __ bind(&call_builtin); |
| 4140 | __ TailCallExternalReference( |
| 4141 | ExternalReference(Builtins::c_ArrayPush, isolate), argc + 1, 1); |
| 4142 | return; |
| 4143 | } |
| 4144 | |
| 4145 | __ lw(a2, MemOperand(sp, (argc - 1) * kPointerSize)); |
| 4146 | // Growing elements that are SMI-only requires special handling in case the |
| 4147 | // new element is non-Smi. For now, delegate to the builtin. |
| 4148 | if (IsFastSmiElementsKind(elements_kind())) { |
| 4149 | __ JumpIfNotSmi(a2, &call_builtin); |
| 4150 | } |
| 4151 | |
| 4152 | // We could be lucky and the elements array could be at the top of new-space. |
| 4153 | // In this case we can just grow it in place by moving the allocation pointer |
| 4154 | // up. |
| 4155 | ExternalReference new_space_allocation_top = |
| 4156 | ExternalReference::new_space_allocation_top_address(isolate); |
| 4157 | ExternalReference new_space_allocation_limit = |
| 4158 | ExternalReference::new_space_allocation_limit_address(isolate); |
| 4159 | |
| 4160 | const int kAllocationDelta = 4; |
| 4161 | ASSERT(kAllocationDelta >= argc); |
| 4162 | // Load top and check if it is the end of elements. |
| 4163 | __ sll(end_elements, scratch, kPointerSizeLog2 - kSmiTagSize); |
| 4164 | __ Addu(end_elements, elements, end_elements); |
| 4165 | __ Addu(end_elements, end_elements, Operand(kEndElementsOffset)); |
| 4166 | __ li(t0, Operand(new_space_allocation_top)); |
| 4167 | __ lw(a3, MemOperand(t0)); |
| 4168 | __ Branch(&call_builtin, ne, a3, Operand(end_elements)); |
| 4169 | |
| 4170 | __ li(t3, Operand(new_space_allocation_limit)); |
| 4171 | __ lw(t3, MemOperand(t3)); |
| 4172 | __ Addu(a3, a3, Operand(kAllocationDelta * kPointerSize)); |
| 4173 | __ Branch(&call_builtin, hi, a3, Operand(t3)); |
| 4174 | |
| 4175 | // We fit and could grow elements. |
| 4176 | // Update new_space_allocation_top. |
| 4177 | __ sw(a3, MemOperand(t0)); |
| 4178 | // Push the argument. |
| 4179 | __ sw(a2, MemOperand(end_elements)); |
| 4180 | // Fill the rest with holes. |
| 4181 | __ LoadRoot(a3, Heap::kTheHoleValueRootIndex); |
| 4182 | for (int i = 1; i < kAllocationDelta; i++) { |
| 4183 | __ sw(a3, MemOperand(end_elements, i * kPointerSize)); |
| 4184 | } |
| 4185 | |
| 4186 | // Update elements' and array's sizes. |
| 4187 | __ sw(scratch, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
| 4188 | __ lw(t0, FieldMemOperand(elements, FixedArray::kLengthOffset)); |
| 4189 | __ Addu(t0, t0, Operand(Smi::FromInt(kAllocationDelta))); |
| 4190 | __ sw(t0, FieldMemOperand(elements, FixedArray::kLengthOffset)); |
| 4191 | |
| 4192 | // Elements are in new space, so write barrier is not required. |
| 4193 | __ mov(v0, scratch); |
| 4194 | __ DropAndRet(argc + 1); |
| 4195 | |
| 4196 | __ bind(&call_builtin); |
| 4197 | __ TailCallExternalReference( |
| 4198 | ExternalReference(Builtins::c_ArrayPush, isolate), argc + 1, 1); |
| 4199 | } |
| 4200 | |
| 4201 | |
ulan@chromium.org | 0f13e74 | 2014-01-03 15:51:11 +0000 | [diff] [blame] | 4202 | void BinaryOpICWithAllocationSiteStub::Generate(MacroAssembler* masm) { |
| 4203 | // ----------- S t a t e ------------- |
| 4204 | // -- a1 : left |
| 4205 | // -- a0 : right |
| 4206 | // -- ra : return address |
| 4207 | // ----------------------------------- |
| 4208 | Isolate* isolate = masm->isolate(); |
| 4209 | |
| 4210 | // Load a2 with the allocation site. We stick an undefined dummy value here |
| 4211 | // and replace it with the real allocation site later when we instantiate this |
| 4212 | // stub in BinaryOpICWithAllocationSiteStub::GetCodeCopyFromTemplate(). |
| 4213 | __ li(a2, handle(isolate->heap()->undefined_value())); |
| 4214 | |
| 4215 | // Make sure that we actually patched the allocation site. |
| 4216 | if (FLAG_debug_code) { |
| 4217 | __ And(at, a2, Operand(kSmiTagMask)); |
| 4218 | __ Assert(ne, kExpectedAllocationSite, at, Operand(zero_reg)); |
| 4219 | __ lw(t0, FieldMemOperand(a2, HeapObject::kMapOffset)); |
| 4220 | __ LoadRoot(at, Heap::kAllocationSiteMapRootIndex); |
| 4221 | __ Assert(eq, kExpectedAllocationSite, t0, Operand(at)); |
| 4222 | } |
| 4223 | |
| 4224 | // Tail call into the stub that handles binary operations with allocation |
| 4225 | // sites. |
| 4226 | BinaryOpWithAllocationSiteStub stub(state_); |
| 4227 | __ TailCallStub(&stub); |
| 4228 | } |
| 4229 | |
| 4230 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 4231 | void ICCompareStub::GenerateSmis(MacroAssembler* masm) { |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 4232 | ASSERT(state_ == CompareIC::SMI); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4233 | Label miss; |
| 4234 | __ Or(a2, a1, a0); |
| 4235 | __ JumpIfNotSmi(a2, &miss); |
| 4236 | |
| 4237 | if (GetCondition() == eq) { |
| 4238 | // For equality we do not care about the sign of the result. |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 4239 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4240 | __ Subu(v0, a0, a1); |
| 4241 | } else { |
| 4242 | // Untag before subtracting to avoid handling overflow. |
| 4243 | __ SmiUntag(a1); |
| 4244 | __ SmiUntag(a0); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 4245 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4246 | __ Subu(v0, a1, a0); |
| 4247 | } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4248 | |
| 4249 | __ bind(&miss); |
| 4250 | GenerateMiss(masm); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 4251 | } |
| 4252 | |
| 4253 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 4254 | void ICCompareStub::GenerateNumbers(MacroAssembler* masm) { |
| 4255 | ASSERT(state_ == CompareIC::NUMBER); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4256 | |
| 4257 | Label generic_stub; |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 4258 | Label unordered, maybe_undefined1, maybe_undefined2; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4259 | Label miss; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4260 | |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 4261 | if (left_ == CompareIC::SMI) { |
| 4262 | __ JumpIfNotSmi(a1, &miss); |
| 4263 | } |
| 4264 | if (right_ == CompareIC::SMI) { |
| 4265 | __ JumpIfNotSmi(a0, &miss); |
| 4266 | } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4267 | |
| 4268 | // Inlining the double comparison and falling back to the general compare |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4269 | // stub if NaN is involved. |
| 4270 | // Load left and right operand. |
| 4271 | Label done, left, left_smi, right_smi; |
| 4272 | __ JumpIfSmi(a0, &right_smi); |
| 4273 | __ CheckMap(a0, a2, Heap::kHeapNumberMapRootIndex, &maybe_undefined1, |
| 4274 | DONT_DO_SMI_CHECK); |
| 4275 | __ Subu(a2, a0, Operand(kHeapObjectTag)); |
| 4276 | __ ldc1(f2, MemOperand(a2, HeapNumber::kValueOffset)); |
| 4277 | __ Branch(&left); |
| 4278 | __ bind(&right_smi); |
| 4279 | __ SmiUntag(a2, a0); // Can't clobber a0 yet. |
| 4280 | FPURegister single_scratch = f6; |
| 4281 | __ mtc1(a2, single_scratch); |
| 4282 | __ cvt_d_w(f2, single_scratch); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4283 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4284 | __ bind(&left); |
| 4285 | __ JumpIfSmi(a1, &left_smi); |
| 4286 | __ CheckMap(a1, a2, Heap::kHeapNumberMapRootIndex, &maybe_undefined2, |
| 4287 | DONT_DO_SMI_CHECK); |
| 4288 | __ Subu(a2, a1, Operand(kHeapObjectTag)); |
| 4289 | __ ldc1(f0, MemOperand(a2, HeapNumber::kValueOffset)); |
| 4290 | __ Branch(&done); |
| 4291 | __ bind(&left_smi); |
| 4292 | __ SmiUntag(a2, a1); // Can't clobber a1 yet. |
| 4293 | single_scratch = f8; |
| 4294 | __ mtc1(a2, single_scratch); |
| 4295 | __ cvt_d_w(f0, single_scratch); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 4296 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4297 | __ bind(&done); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 4298 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4299 | // Return a result of -1, 0, or 1, or use CompareStub for NaNs. |
| 4300 | Label fpu_eq, fpu_lt; |
| 4301 | // Test if equal, and also handle the unordered/NaN case. |
| 4302 | __ BranchF(&fpu_eq, &unordered, eq, f0, f2); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4303 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4304 | // Test if less (unordered case is already handled). |
| 4305 | __ BranchF(&fpu_lt, NULL, lt, f0, f2); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4306 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4307 | // Otherwise it's greater, so just fall thru, and return. |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 4308 | ASSERT(is_int16(GREATER) && is_int16(EQUAL) && is_int16(LESS)); |
| 4309 | __ Ret(USE_DELAY_SLOT); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4310 | __ li(v0, Operand(GREATER)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4311 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4312 | __ bind(&fpu_eq); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 4313 | __ Ret(USE_DELAY_SLOT); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4314 | __ li(v0, Operand(EQUAL)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4315 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4316 | __ bind(&fpu_lt); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 4317 | __ Ret(USE_DELAY_SLOT); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4318 | __ li(v0, Operand(LESS)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4319 | |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 4320 | __ bind(&unordered); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4321 | __ bind(&generic_stub); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 4322 | ICCompareStub stub(op_, CompareIC::GENERIC, CompareIC::GENERIC, |
| 4323 | CompareIC::GENERIC); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 4324 | __ Jump(stub.GetCode(masm->isolate()), RelocInfo::CODE_TARGET); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4325 | |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 4326 | __ bind(&maybe_undefined1); |
| 4327 | if (Token::IsOrderedRelationalCompareOp(op_)) { |
| 4328 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 4329 | __ Branch(&miss, ne, a0, Operand(at)); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 4330 | __ JumpIfSmi(a1, &unordered); |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 4331 | __ GetObjectType(a1, a2, a2); |
| 4332 | __ Branch(&maybe_undefined2, ne, a2, Operand(HEAP_NUMBER_TYPE)); |
| 4333 | __ jmp(&unordered); |
| 4334 | } |
| 4335 | |
| 4336 | __ bind(&maybe_undefined2); |
| 4337 | if (Token::IsOrderedRelationalCompareOp(op_)) { |
| 4338 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| 4339 | __ Branch(&unordered, eq, a1, Operand(at)); |
| 4340 | } |
| 4341 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4342 | __ bind(&miss); |
| 4343 | GenerateMiss(masm); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 4344 | } |
| 4345 | |
| 4346 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 4347 | void ICCompareStub::GenerateInternalizedStrings(MacroAssembler* masm) { |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4348 | ASSERT(state_ == CompareIC::INTERNALIZED_STRING); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4349 | Label miss; |
| 4350 | |
| 4351 | // Registers containing left and right operands respectively. |
| 4352 | Register left = a1; |
| 4353 | Register right = a0; |
| 4354 | Register tmp1 = a2; |
| 4355 | Register tmp2 = a3; |
| 4356 | |
| 4357 | // Check that both operands are heap objects. |
| 4358 | __ JumpIfEitherSmi(left, right, &miss); |
| 4359 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 4360 | // Check that both operands are internalized strings. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4361 | __ lw(tmp1, FieldMemOperand(left, HeapObject::kMapOffset)); |
| 4362 | __ lw(tmp2, FieldMemOperand(right, HeapObject::kMapOffset)); |
| 4363 | __ lbu(tmp1, FieldMemOperand(tmp1, Map::kInstanceTypeOffset)); |
| 4364 | __ lbu(tmp2, FieldMemOperand(tmp2, Map::kInstanceTypeOffset)); |
jkummerow@chromium.org | ba72ec8 | 2013-07-22 09:21:20 +0000 | [diff] [blame] | 4365 | STATIC_ASSERT(kInternalizedTag == 0 && kStringTag == 0); |
| 4366 | __ Or(tmp1, tmp1, Operand(tmp2)); |
| 4367 | __ And(at, tmp1, Operand(kIsNotStringMask | kIsNotInternalizedMask)); |
| 4368 | __ Branch(&miss, ne, at, Operand(zero_reg)); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 4369 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4370 | // Make sure a0 is non-zero. At this point input operands are |
| 4371 | // guaranteed to be non-zero. |
| 4372 | ASSERT(right.is(a0)); |
| 4373 | STATIC_ASSERT(EQUAL == 0); |
| 4374 | STATIC_ASSERT(kSmiTag == 0); |
| 4375 | __ mov(v0, right); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 4376 | // Internalized strings are compared by identity. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4377 | __ Ret(ne, left, Operand(right)); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 4378 | ASSERT(is_int16(EQUAL)); |
| 4379 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4380 | __ li(v0, Operand(Smi::FromInt(EQUAL))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4381 | |
| 4382 | __ bind(&miss); |
| 4383 | GenerateMiss(masm); |
| 4384 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4385 | |
| 4386 | |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4387 | void ICCompareStub::GenerateUniqueNames(MacroAssembler* masm) { |
| 4388 | ASSERT(state_ == CompareIC::UNIQUE_NAME); |
| 4389 | ASSERT(GetCondition() == eq); |
| 4390 | Label miss; |
| 4391 | |
| 4392 | // Registers containing left and right operands respectively. |
| 4393 | Register left = a1; |
| 4394 | Register right = a0; |
| 4395 | Register tmp1 = a2; |
| 4396 | Register tmp2 = a3; |
| 4397 | |
| 4398 | // Check that both operands are heap objects. |
| 4399 | __ JumpIfEitherSmi(left, right, &miss); |
| 4400 | |
| 4401 | // Check that both operands are unique names. This leaves the instance |
| 4402 | // types loaded in tmp1 and tmp2. |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4403 | __ lw(tmp1, FieldMemOperand(left, HeapObject::kMapOffset)); |
| 4404 | __ lw(tmp2, FieldMemOperand(right, HeapObject::kMapOffset)); |
| 4405 | __ lbu(tmp1, FieldMemOperand(tmp1, Map::kInstanceTypeOffset)); |
| 4406 | __ lbu(tmp2, FieldMemOperand(tmp2, Map::kInstanceTypeOffset)); |
| 4407 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 4408 | __ JumpIfNotUniqueName(tmp1, &miss); |
| 4409 | __ JumpIfNotUniqueName(tmp2, &miss); |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4410 | |
| 4411 | // Use a0 as result |
| 4412 | __ mov(v0, a0); |
| 4413 | |
| 4414 | // Unique names are compared by identity. |
| 4415 | Label done; |
| 4416 | __ Branch(&done, ne, left, Operand(right)); |
| 4417 | // Make sure a0 is non-zero. At this point input operands are |
| 4418 | // guaranteed to be non-zero. |
| 4419 | ASSERT(right.is(a0)); |
| 4420 | STATIC_ASSERT(EQUAL == 0); |
| 4421 | STATIC_ASSERT(kSmiTag == 0); |
| 4422 | __ li(v0, Operand(Smi::FromInt(EQUAL))); |
| 4423 | __ bind(&done); |
| 4424 | __ Ret(); |
| 4425 | |
| 4426 | __ bind(&miss); |
| 4427 | GenerateMiss(masm); |
| 4428 | } |
| 4429 | |
| 4430 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4431 | void ICCompareStub::GenerateStrings(MacroAssembler* masm) { |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 4432 | ASSERT(state_ == CompareIC::STRING); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4433 | Label miss; |
| 4434 | |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 4435 | bool equality = Token::IsEqualityOp(op_); |
| 4436 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4437 | // Registers containing left and right operands respectively. |
| 4438 | Register left = a1; |
| 4439 | Register right = a0; |
| 4440 | Register tmp1 = a2; |
| 4441 | Register tmp2 = a3; |
| 4442 | Register tmp3 = t0; |
| 4443 | Register tmp4 = t1; |
| 4444 | Register tmp5 = t2; |
| 4445 | |
| 4446 | // Check that both operands are heap objects. |
| 4447 | __ JumpIfEitherSmi(left, right, &miss); |
| 4448 | |
| 4449 | // Check that both operands are strings. This leaves the instance |
| 4450 | // types loaded in tmp1 and tmp2. |
| 4451 | __ lw(tmp1, FieldMemOperand(left, HeapObject::kMapOffset)); |
| 4452 | __ lw(tmp2, FieldMemOperand(right, HeapObject::kMapOffset)); |
| 4453 | __ lbu(tmp1, FieldMemOperand(tmp1, Map::kInstanceTypeOffset)); |
| 4454 | __ lbu(tmp2, FieldMemOperand(tmp2, Map::kInstanceTypeOffset)); |
| 4455 | STATIC_ASSERT(kNotStringTag != 0); |
| 4456 | __ Or(tmp3, tmp1, tmp2); |
| 4457 | __ And(tmp5, tmp3, Operand(kIsNotStringMask)); |
| 4458 | __ Branch(&miss, ne, tmp5, Operand(zero_reg)); |
| 4459 | |
| 4460 | // Fast check for identical strings. |
| 4461 | Label left_ne_right; |
| 4462 | STATIC_ASSERT(EQUAL == 0); |
| 4463 | STATIC_ASSERT(kSmiTag == 0); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 4464 | __ Branch(&left_ne_right, ne, left, Operand(right)); |
| 4465 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4466 | __ mov(v0, zero_reg); // In the delay slot. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4467 | __ bind(&left_ne_right); |
| 4468 | |
| 4469 | // Handle not identical strings. |
| 4470 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 4471 | // Check that both strings are internalized strings. If they are, we're done |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 4472 | // because we already know they are not identical. We know they are both |
| 4473 | // strings. |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 4474 | if (equality) { |
| 4475 | ASSERT(GetCondition() == eq); |
jkummerow@chromium.org | ba72ec8 | 2013-07-22 09:21:20 +0000 | [diff] [blame] | 4476 | STATIC_ASSERT(kInternalizedTag == 0); |
| 4477 | __ Or(tmp3, tmp1, Operand(tmp2)); |
| 4478 | __ And(tmp5, tmp3, Operand(kIsNotInternalizedMask)); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 4479 | Label is_symbol; |
jkummerow@chromium.org | ba72ec8 | 2013-07-22 09:21:20 +0000 | [diff] [blame] | 4480 | __ Branch(&is_symbol, ne, tmp5, Operand(zero_reg)); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 4481 | // Make sure a0 is non-zero. At this point input operands are |
| 4482 | // guaranteed to be non-zero. |
| 4483 | ASSERT(right.is(a0)); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 4484 | __ Ret(USE_DELAY_SLOT); |
| 4485 | __ mov(v0, a0); // In the delay slot. |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 4486 | __ bind(&is_symbol); |
| 4487 | } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4488 | |
| 4489 | // Check that both strings are sequential ASCII. |
| 4490 | Label runtime; |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 4491 | __ JumpIfBothInstanceTypesAreNotSequentialAscii( |
| 4492 | tmp1, tmp2, tmp3, tmp4, &runtime); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4493 | |
| 4494 | // Compare flat ASCII strings. Returns when done. |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 4495 | if (equality) { |
| 4496 | StringCompareStub::GenerateFlatAsciiStringEquals( |
| 4497 | masm, left, right, tmp1, tmp2, tmp3); |
| 4498 | } else { |
| 4499 | StringCompareStub::GenerateCompareFlatAsciiStrings( |
| 4500 | masm, left, right, tmp1, tmp2, tmp3, tmp4); |
| 4501 | } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4502 | |
| 4503 | // Handle more complex cases in runtime. |
| 4504 | __ bind(&runtime); |
| 4505 | __ Push(left, right); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 4506 | if (equality) { |
| 4507 | __ TailCallRuntime(Runtime::kStringEquals, 2, 1); |
| 4508 | } else { |
machenbach@chromium.org | 9b95fd7 | 2014-03-26 01:04:35 +0000 | [diff] [blame] | 4509 | __ TailCallRuntime(Runtime::kHiddenStringCompare, 2, 1); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 4510 | } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4511 | |
| 4512 | __ bind(&miss); |
| 4513 | GenerateMiss(masm); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4514 | } |
| 4515 | |
| 4516 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 4517 | void ICCompareStub::GenerateObjects(MacroAssembler* masm) { |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 4518 | ASSERT(state_ == CompareIC::OBJECT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4519 | Label miss; |
| 4520 | __ And(a2, a1, Operand(a0)); |
| 4521 | __ JumpIfSmi(a2, &miss); |
| 4522 | |
| 4523 | __ GetObjectType(a0, a2, a2); |
| 4524 | __ Branch(&miss, ne, a2, Operand(JS_OBJECT_TYPE)); |
| 4525 | __ GetObjectType(a1, a2, a2); |
| 4526 | __ Branch(&miss, ne, a2, Operand(JS_OBJECT_TYPE)); |
| 4527 | |
| 4528 | ASSERT(GetCondition() == eq); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 4529 | __ Ret(USE_DELAY_SLOT); |
| 4530 | __ subu(v0, a0, a1); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4531 | |
| 4532 | __ bind(&miss); |
| 4533 | GenerateMiss(masm); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 4534 | } |
| 4535 | |
| 4536 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4537 | void ICCompareStub::GenerateKnownObjects(MacroAssembler* masm) { |
| 4538 | Label miss; |
| 4539 | __ And(a2, a1, a0); |
| 4540 | __ JumpIfSmi(a2, &miss); |
| 4541 | __ lw(a2, FieldMemOperand(a0, HeapObject::kMapOffset)); |
| 4542 | __ lw(a3, FieldMemOperand(a1, HeapObject::kMapOffset)); |
| 4543 | __ Branch(&miss, ne, a2, Operand(known_map_)); |
| 4544 | __ Branch(&miss, ne, a3, Operand(known_map_)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4545 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4546 | __ Ret(USE_DELAY_SLOT); |
| 4547 | __ subu(v0, a0, a1); |
| 4548 | |
| 4549 | __ bind(&miss); |
| 4550 | GenerateMiss(masm); |
| 4551 | } |
| 4552 | |
mstarzinger@chromium.org | e0e1b0d | 2013-07-08 08:38:06 +0000 | [diff] [blame] | 4553 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4554 | void ICCompareStub::GenerateMiss(MacroAssembler* masm) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4555 | { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4556 | // Call the runtime system in a fresh internal frame. |
| 4557 | ExternalReference miss = |
| 4558 | ExternalReference(IC_Utility(IC::kCompareIC_Miss), masm->isolate()); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4559 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 4560 | __ Push(a1, a0); |
verwaest@chromium.org | 057bd50 | 2013-11-06 12:03:29 +0000 | [diff] [blame] | 4561 | __ Push(ra, a1, a0); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4562 | __ li(t0, Operand(Smi::FromInt(op_))); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 4563 | __ addiu(sp, sp, -kPointerSize); |
| 4564 | __ CallExternalReference(miss, 3, USE_DELAY_SLOT); |
| 4565 | __ sw(t0, MemOperand(sp)); // In the delay slot. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4566 | // Compute the entry point of the rewritten stub. |
| 4567 | __ Addu(a2, v0, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 4568 | // Restore registers. |
| 4569 | __ Pop(a1, a0, ra); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4570 | } |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4571 | __ Jump(a2); |
| 4572 | } |
| 4573 | |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 4574 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4575 | void DirectCEntryStub::Generate(MacroAssembler* masm) { |
machenbach@chromium.org | 3d079fe | 2013-09-25 08:19:55 +0000 | [diff] [blame] | 4576 | // Make place for arguments to fit C calling convention. Most of the callers |
| 4577 | // of DirectCEntryStub::GenerateCall are using EnterExitFrame/LeaveExitFrame |
| 4578 | // so they handle stack restoring and we don't have to do that here. |
| 4579 | // Any caller of DirectCEntryStub::GenerateCall must take care of dropping |
| 4580 | // kCArgsSlotsSize stack space after the call. |
| 4581 | __ Subu(sp, sp, Operand(kCArgsSlotsSize)); |
| 4582 | // Place the return address on the stack, making the call |
| 4583 | // GC safe. The RegExp backend also relies on this. |
| 4584 | __ sw(ra, MemOperand(sp, kCArgsSlotsSize)); |
| 4585 | __ Call(t9); // Call the C++ function. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4586 | __ lw(t9, MemOperand(sp, kCArgsSlotsSize)); |
| 4587 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4588 | if (FLAG_debug_code && FLAG_enable_slow_asserts) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4589 | // In case of an error the return address may point to a memory area |
| 4590 | // filled with kZapValue by the GC. |
| 4591 | // Dereference the address and check for this. |
| 4592 | __ lw(t0, MemOperand(t9)); |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 4593 | __ Assert(ne, kReceivedInvalidReturnAddress, t0, |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4594 | Operand(reinterpret_cast<uint32_t>(kZapValue))); |
| 4595 | } |
| 4596 | __ Jump(t9); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 4597 | } |
| 4598 | |
| 4599 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4600 | void DirectCEntryStub::GenerateCall(MacroAssembler* masm, |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4601 | Register target) { |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 4602 | intptr_t loc = |
| 4603 | reinterpret_cast<intptr_t>(GetCode(masm->isolate()).location()); |
machenbach@chromium.org | 3d079fe | 2013-09-25 08:19:55 +0000 | [diff] [blame] | 4604 | __ Move(t9, target); |
| 4605 | __ li(ra, Operand(loc, RelocInfo::CODE_TARGET), CONSTANT_SIZE); |
| 4606 | __ Call(ra); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4607 | } |
| 4608 | |
| 4609 | |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4610 | void NameDictionaryLookupStub::GenerateNegativeLookup(MacroAssembler* masm, |
| 4611 | Label* miss, |
| 4612 | Label* done, |
| 4613 | Register receiver, |
| 4614 | Register properties, |
| 4615 | Handle<Name> name, |
| 4616 | Register scratch0) { |
| 4617 | ASSERT(name->IsUniqueName()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4618 | // If names of slots in range from 1 to kProbes - 1 for the hash value are |
| 4619 | // not equal to the name and kProbes-th slot is not used (its name is the |
| 4620 | // undefined value), it guarantees the hash table doesn't contain the |
| 4621 | // property. It's true even if some slots represent deleted properties |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4622 | // (their names are the hole value). |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4623 | for (int i = 0; i < kInlinedProbes; i++) { |
| 4624 | // scratch0 points to properties hash. |
| 4625 | // Compute the masked index: (hash + i + i * i) & mask. |
| 4626 | Register index = scratch0; |
| 4627 | // Capacity is smi 2^n. |
| 4628 | __ lw(index, FieldMemOperand(properties, kCapacityOffset)); |
| 4629 | __ Subu(index, index, Operand(1)); |
| 4630 | __ And(index, index, Operand( |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4631 | Smi::FromInt(name->Hash() + NameDictionary::GetProbeOffset(i)))); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4632 | |
| 4633 | // Scale the index by multiplying by the entry size. |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4634 | ASSERT(NameDictionary::kEntrySize == 3); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4635 | __ sll(at, index, 1); |
| 4636 | __ Addu(index, index, at); |
| 4637 | |
| 4638 | Register entity_name = scratch0; |
| 4639 | // Having undefined at this place means the name is not contained. |
| 4640 | ASSERT_EQ(kSmiTagSize, 1); |
| 4641 | Register tmp = properties; |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4642 | __ sll(scratch0, index, 1); |
| 4643 | __ Addu(tmp, properties, scratch0); |
| 4644 | __ lw(entity_name, FieldMemOperand(tmp, kElementsStartOffset)); |
| 4645 | |
| 4646 | ASSERT(!tmp.is(entity_name)); |
| 4647 | __ LoadRoot(tmp, Heap::kUndefinedValueRootIndex); |
| 4648 | __ Branch(done, eq, entity_name, Operand(tmp)); |
| 4649 | |
ulan@chromium.org | 77802e8 | 2013-03-26 11:54:42 +0000 | [diff] [blame] | 4650 | // Load the hole ready for use below: |
| 4651 | __ LoadRoot(tmp, Heap::kTheHoleValueRootIndex); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4652 | |
ulan@chromium.org | 77802e8 | 2013-03-26 11:54:42 +0000 | [diff] [blame] | 4653 | // Stop if found the property. |
| 4654 | __ Branch(miss, eq, entity_name, Operand(Handle<Name>(name))); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4655 | |
ulan@chromium.org | 77802e8 | 2013-03-26 11:54:42 +0000 | [diff] [blame] | 4656 | Label good; |
| 4657 | __ Branch(&good, eq, entity_name, Operand(tmp)); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4658 | |
ulan@chromium.org | 77802e8 | 2013-03-26 11:54:42 +0000 | [diff] [blame] | 4659 | // Check if the entry name is not a unique name. |
| 4660 | __ lw(entity_name, FieldMemOperand(entity_name, HeapObject::kMapOffset)); |
| 4661 | __ lbu(entity_name, |
| 4662 | FieldMemOperand(entity_name, Map::kInstanceTypeOffset)); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 4663 | __ JumpIfNotUniqueName(entity_name, miss); |
ulan@chromium.org | 77802e8 | 2013-03-26 11:54:42 +0000 | [diff] [blame] | 4664 | __ bind(&good); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4665 | |
ulan@chromium.org | 77802e8 | 2013-03-26 11:54:42 +0000 | [diff] [blame] | 4666 | // Restore the properties. |
| 4667 | __ lw(properties, |
| 4668 | FieldMemOperand(receiver, JSObject::kPropertiesOffset)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4669 | } |
| 4670 | |
| 4671 | const int spill_mask = |
| 4672 | (ra.bit() | t2.bit() | t1.bit() | t0.bit() | a3.bit() | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4673 | a2.bit() | a1.bit() | a0.bit() | v0.bit()); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4674 | |
| 4675 | __ MultiPush(spill_mask); |
| 4676 | __ lw(a0, FieldMemOperand(receiver, JSObject::kPropertiesOffset)); |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4677 | __ li(a1, Operand(Handle<Name>(name))); |
| 4678 | NameDictionaryLookupStub stub(NEGATIVE_LOOKUP); |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4679 | __ CallStub(&stub); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4680 | __ mov(at, v0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4681 | __ MultiPop(spill_mask); |
| 4682 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4683 | __ Branch(done, eq, at, Operand(zero_reg)); |
| 4684 | __ Branch(miss, ne, at, Operand(zero_reg)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4685 | } |
| 4686 | |
| 4687 | |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4688 | // Probe the name dictionary in the |elements| register. Jump to the |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4689 | // |done| label if a property with the given name is found. Jump to |
| 4690 | // the |miss| label otherwise. |
| 4691 | // If lookup was successful |scratch2| will be equal to elements + 4 * index. |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4692 | void NameDictionaryLookupStub::GeneratePositiveLookup(MacroAssembler* masm, |
| 4693 | Label* miss, |
| 4694 | Label* done, |
| 4695 | Register elements, |
| 4696 | Register name, |
| 4697 | Register scratch1, |
| 4698 | Register scratch2) { |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4699 | ASSERT(!elements.is(scratch1)); |
| 4700 | ASSERT(!elements.is(scratch2)); |
| 4701 | ASSERT(!name.is(scratch1)); |
| 4702 | ASSERT(!name.is(scratch2)); |
| 4703 | |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4704 | __ AssertName(name); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4705 | |
| 4706 | // Compute the capacity mask. |
| 4707 | __ lw(scratch1, FieldMemOperand(elements, kCapacityOffset)); |
| 4708 | __ sra(scratch1, scratch1, kSmiTagSize); // convert smi to int |
| 4709 | __ Subu(scratch1, scratch1, Operand(1)); |
| 4710 | |
| 4711 | // Generate an unrolled loop that performs a few probes before |
| 4712 | // giving up. Measurements done on Gmail indicate that 2 probes |
| 4713 | // cover ~93% of loads from dictionaries. |
| 4714 | for (int i = 0; i < kInlinedProbes; i++) { |
| 4715 | // Compute the masked index: (hash + i + i * i) & mask. |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4716 | __ lw(scratch2, FieldMemOperand(name, Name::kHashFieldOffset)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4717 | if (i > 0) { |
| 4718 | // Add the probe offset (i + i * i) left shifted to avoid right shifting |
| 4719 | // the hash in a separate instruction. The value hash + i + i * i is right |
| 4720 | // shifted in the following and instruction. |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4721 | ASSERT(NameDictionary::GetProbeOffset(i) < |
| 4722 | 1 << (32 - Name::kHashFieldOffset)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4723 | __ Addu(scratch2, scratch2, Operand( |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4724 | NameDictionary::GetProbeOffset(i) << Name::kHashShift)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4725 | } |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4726 | __ srl(scratch2, scratch2, Name::kHashShift); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4727 | __ And(scratch2, scratch1, scratch2); |
| 4728 | |
| 4729 | // Scale the index by multiplying by the element size. |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4730 | ASSERT(NameDictionary::kEntrySize == 3); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4731 | // scratch2 = scratch2 * 3. |
| 4732 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4733 | __ sll(at, scratch2, 1); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4734 | __ Addu(scratch2, scratch2, at); |
| 4735 | |
| 4736 | // Check if the key is identical to the name. |
| 4737 | __ sll(at, scratch2, 2); |
| 4738 | __ Addu(scratch2, elements, at); |
| 4739 | __ lw(at, FieldMemOperand(scratch2, kElementsStartOffset)); |
| 4740 | __ Branch(done, eq, name, Operand(at)); |
| 4741 | } |
| 4742 | |
| 4743 | const int spill_mask = |
| 4744 | (ra.bit() | t2.bit() | t1.bit() | t0.bit() | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4745 | a3.bit() | a2.bit() | a1.bit() | a0.bit() | v0.bit()) & |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4746 | ~(scratch1.bit() | scratch2.bit()); |
| 4747 | |
| 4748 | __ MultiPush(spill_mask); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4749 | if (name.is(a0)) { |
| 4750 | ASSERT(!elements.is(a1)); |
| 4751 | __ Move(a1, name); |
| 4752 | __ Move(a0, elements); |
| 4753 | } else { |
| 4754 | __ Move(a0, elements); |
| 4755 | __ Move(a1, name); |
| 4756 | } |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4757 | NameDictionaryLookupStub stub(POSITIVE_LOOKUP); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4758 | __ CallStub(&stub); |
| 4759 | __ mov(scratch2, a2); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4760 | __ mov(at, v0); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4761 | __ MultiPop(spill_mask); |
| 4762 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4763 | __ Branch(done, ne, at, Operand(zero_reg)); |
| 4764 | __ Branch(miss, eq, at, Operand(zero_reg)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4765 | } |
| 4766 | |
| 4767 | |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4768 | void NameDictionaryLookupStub::Generate(MacroAssembler* masm) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4769 | // This stub overrides SometimesSetsUpAFrame() to return false. That means |
| 4770 | // we cannot call anything that could cause a GC from this stub. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4771 | // Registers: |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4772 | // result: NameDictionary to probe |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4773 | // a1: key |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4774 | // dictionary: NameDictionary to probe. |
| 4775 | // index: will hold an index of entry if lookup is successful. |
| 4776 | // might alias with result_. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4777 | // Returns: |
| 4778 | // result_ is zero if lookup failed, non zero otherwise. |
| 4779 | |
| 4780 | Register result = v0; |
| 4781 | Register dictionary = a0; |
| 4782 | Register key = a1; |
| 4783 | Register index = a2; |
| 4784 | Register mask = a3; |
| 4785 | Register hash = t0; |
| 4786 | Register undefined = t1; |
| 4787 | Register entry_key = t2; |
| 4788 | |
| 4789 | Label in_dictionary, maybe_in_dictionary, not_in_dictionary; |
| 4790 | |
| 4791 | __ lw(mask, FieldMemOperand(dictionary, kCapacityOffset)); |
| 4792 | __ sra(mask, mask, kSmiTagSize); |
| 4793 | __ Subu(mask, mask, Operand(1)); |
| 4794 | |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4795 | __ lw(hash, FieldMemOperand(key, Name::kHashFieldOffset)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4796 | |
| 4797 | __ LoadRoot(undefined, Heap::kUndefinedValueRootIndex); |
| 4798 | |
| 4799 | for (int i = kInlinedProbes; i < kTotalProbes; i++) { |
| 4800 | // Compute the masked index: (hash + i + i * i) & mask. |
| 4801 | // Capacity is smi 2^n. |
| 4802 | if (i > 0) { |
| 4803 | // Add the probe offset (i + i * i) left shifted to avoid right shifting |
| 4804 | // the hash in a separate instruction. The value hash + i + i * i is right |
| 4805 | // shifted in the following and instruction. |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4806 | ASSERT(NameDictionary::GetProbeOffset(i) < |
| 4807 | 1 << (32 - Name::kHashFieldOffset)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4808 | __ Addu(index, hash, Operand( |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4809 | NameDictionary::GetProbeOffset(i) << Name::kHashShift)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4810 | } else { |
| 4811 | __ mov(index, hash); |
| 4812 | } |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4813 | __ srl(index, index, Name::kHashShift); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4814 | __ And(index, mask, index); |
| 4815 | |
| 4816 | // Scale the index by multiplying by the entry size. |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4817 | ASSERT(NameDictionary::kEntrySize == 3); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4818 | // index *= 3. |
| 4819 | __ mov(at, index); |
| 4820 | __ sll(index, index, 1); |
| 4821 | __ Addu(index, index, at); |
| 4822 | |
| 4823 | |
| 4824 | ASSERT_EQ(kSmiTagSize, 1); |
| 4825 | __ sll(index, index, 2); |
| 4826 | __ Addu(index, index, dictionary); |
| 4827 | __ lw(entry_key, FieldMemOperand(index, kElementsStartOffset)); |
| 4828 | |
| 4829 | // Having undefined at this place means the name is not contained. |
| 4830 | __ Branch(¬_in_dictionary, eq, entry_key, Operand(undefined)); |
| 4831 | |
| 4832 | // Stop if found the property. |
| 4833 | __ Branch(&in_dictionary, eq, entry_key, Operand(key)); |
| 4834 | |
| 4835 | if (i != kTotalProbes - 1 && mode_ == NEGATIVE_LOOKUP) { |
svenpanne@chromium.org | 9faefa4 | 2013-03-08 13:13:16 +0000 | [diff] [blame] | 4836 | // Check if the entry name is not a unique name. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4837 | __ lw(entry_key, FieldMemOperand(entry_key, HeapObject::kMapOffset)); |
| 4838 | __ lbu(entry_key, |
| 4839 | FieldMemOperand(entry_key, Map::kInstanceTypeOffset)); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 4840 | __ JumpIfNotUniqueName(entry_key, &maybe_in_dictionary); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4841 | } |
| 4842 | } |
| 4843 | |
| 4844 | __ bind(&maybe_in_dictionary); |
| 4845 | // If we are doing negative lookup then probing failure should be |
| 4846 | // treated as a lookup success. For positive lookup probing failure |
| 4847 | // should be treated as lookup failure. |
| 4848 | if (mode_ == POSITIVE_LOOKUP) { |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 4849 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4850 | __ mov(result, zero_reg); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4851 | } |
| 4852 | |
| 4853 | __ bind(&in_dictionary); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 4854 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4855 | __ li(result, 1); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4856 | |
| 4857 | __ bind(¬_in_dictionary); |
ulan@chromium.org | 6ff6514 | 2012-03-21 09:52:17 +0000 | [diff] [blame] | 4858 | __ Ret(USE_DELAY_SLOT); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 4859 | __ mov(result, zero_reg); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 4860 | } |
| 4861 | |
| 4862 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 4863 | void StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime( |
| 4864 | Isolate* isolate) { |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 4865 | StoreBufferOverflowStub stub1(kDontSaveFPRegs); |
machenbach@chromium.org | ce9c514 | 2013-12-03 08:00:39 +0000 | [diff] [blame] | 4866 | stub1.GetCode(isolate); |
danno@chromium.org | bee5199 | 2013-07-10 14:57:15 +0000 | [diff] [blame] | 4867 | // Hydrogen code stubs need stub2 at snapshot time. |
| 4868 | StoreBufferOverflowStub stub2(kSaveFPRegs); |
machenbach@chromium.org | ce9c514 | 2013-12-03 08:00:39 +0000 | [diff] [blame] | 4869 | stub2.GetCode(isolate); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 4870 | } |
| 4871 | |
| 4872 | |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 4873 | bool CodeStub::CanUseFPRegisters() { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4874 | return true; // FPU is a base requirement for V8. |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 4875 | } |
| 4876 | |
| 4877 | |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 4878 | // Takes the input in 3 registers: address_ value_ and object_. A pointer to |
| 4879 | // the value has just been written into the object, now this stub makes sure |
| 4880 | // we keep the GC informed. The word in the object where the value has been |
| 4881 | // written is in the address register. |
| 4882 | void RecordWriteStub::Generate(MacroAssembler* masm) { |
| 4883 | Label skip_to_incremental_noncompacting; |
| 4884 | Label skip_to_incremental_compacting; |
| 4885 | |
| 4886 | // The first two branch+nop instructions are generated with labels so as to |
| 4887 | // get the offset fixed up correctly by the bind(Label*) call. We patch it |
| 4888 | // back and forth between a "bne zero_reg, zero_reg, ..." (a nop in this |
| 4889 | // position) and the "beq zero_reg, zero_reg, ..." when we start and stop |
| 4890 | // incremental heap marking. |
| 4891 | // See RecordWriteStub::Patch for details. |
| 4892 | __ beq(zero_reg, zero_reg, &skip_to_incremental_noncompacting); |
| 4893 | __ nop(); |
| 4894 | __ beq(zero_reg, zero_reg, &skip_to_incremental_compacting); |
| 4895 | __ nop(); |
| 4896 | |
| 4897 | if (remembered_set_action_ == EMIT_REMEMBERED_SET) { |
| 4898 | __ RememberedSetHelper(object_, |
| 4899 | address_, |
| 4900 | value_, |
| 4901 | save_fp_regs_mode_, |
| 4902 | MacroAssembler::kReturnAtEnd); |
| 4903 | } |
| 4904 | __ Ret(); |
| 4905 | |
| 4906 | __ bind(&skip_to_incremental_noncompacting); |
| 4907 | GenerateIncremental(masm, INCREMENTAL); |
| 4908 | |
| 4909 | __ bind(&skip_to_incremental_compacting); |
| 4910 | GenerateIncremental(masm, INCREMENTAL_COMPACTION); |
| 4911 | |
| 4912 | // Initial mode of the stub is expected to be STORE_BUFFER_ONLY. |
| 4913 | // Will be checked in IncrementalMarking::ActivateGeneratedStub. |
| 4914 | |
| 4915 | PatchBranchIntoNop(masm, 0); |
| 4916 | PatchBranchIntoNop(masm, 2 * Assembler::kInstrSize); |
| 4917 | } |
| 4918 | |
| 4919 | |
| 4920 | void RecordWriteStub::GenerateIncremental(MacroAssembler* masm, Mode mode) { |
| 4921 | regs_.Save(masm); |
| 4922 | |
| 4923 | if (remembered_set_action_ == EMIT_REMEMBERED_SET) { |
| 4924 | Label dont_need_remembered_set; |
| 4925 | |
| 4926 | __ lw(regs_.scratch0(), MemOperand(regs_.address(), 0)); |
| 4927 | __ JumpIfNotInNewSpace(regs_.scratch0(), // Value. |
| 4928 | regs_.scratch0(), |
| 4929 | &dont_need_remembered_set); |
| 4930 | |
| 4931 | __ CheckPageFlag(regs_.object(), |
| 4932 | regs_.scratch0(), |
| 4933 | 1 << MemoryChunk::SCAN_ON_SCAVENGE, |
| 4934 | ne, |
| 4935 | &dont_need_remembered_set); |
| 4936 | |
| 4937 | // First notify the incremental marker if necessary, then update the |
| 4938 | // remembered set. |
| 4939 | CheckNeedsToInformIncrementalMarker( |
| 4940 | masm, kUpdateRememberedSetOnNoNeedToInformIncrementalMarker, mode); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 4941 | InformIncrementalMarker(masm); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 4942 | regs_.Restore(masm); |
| 4943 | __ RememberedSetHelper(object_, |
| 4944 | address_, |
| 4945 | value_, |
| 4946 | save_fp_regs_mode_, |
| 4947 | MacroAssembler::kReturnAtEnd); |
| 4948 | |
| 4949 | __ bind(&dont_need_remembered_set); |
| 4950 | } |
| 4951 | |
| 4952 | CheckNeedsToInformIncrementalMarker( |
| 4953 | masm, kReturnOnNoNeedToInformIncrementalMarker, mode); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 4954 | InformIncrementalMarker(masm); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 4955 | regs_.Restore(masm); |
| 4956 | __ Ret(); |
| 4957 | } |
| 4958 | |
| 4959 | |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 4960 | void RecordWriteStub::InformIncrementalMarker(MacroAssembler* masm) { |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 4961 | regs_.SaveCallerSaveRegisters(masm, save_fp_regs_mode_); |
| 4962 | int argument_count = 3; |
| 4963 | __ PrepareCallCFunction(argument_count, regs_.scratch0()); |
| 4964 | Register address = |
| 4965 | a0.is(regs_.address()) ? regs_.scratch0() : regs_.address(); |
| 4966 | ASSERT(!address.is(regs_.object())); |
| 4967 | ASSERT(!address.is(a0)); |
| 4968 | __ Move(address, regs_.address()); |
| 4969 | __ Move(a0, regs_.object()); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 4970 | __ Move(a1, address); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 4971 | __ li(a2, Operand(ExternalReference::isolate_address(masm->isolate()))); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 4972 | |
| 4973 | AllowExternalCallThatCantCauseGC scope(masm); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 4974 | __ CallCFunction( |
| 4975 | ExternalReference::incremental_marking_record_write_function( |
| 4976 | masm->isolate()), |
| 4977 | argument_count); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 4978 | regs_.RestoreCallerSaveRegisters(masm, save_fp_regs_mode_); |
| 4979 | } |
| 4980 | |
| 4981 | |
| 4982 | void RecordWriteStub::CheckNeedsToInformIncrementalMarker( |
| 4983 | MacroAssembler* masm, |
| 4984 | OnNoNeedToInformIncrementalMarker on_no_need, |
| 4985 | Mode mode) { |
| 4986 | Label on_black; |
| 4987 | Label need_incremental; |
| 4988 | Label need_incremental_pop_scratch; |
| 4989 | |
rossberg@chromium.org | 89e18f5 | 2012-10-22 13:09:53 +0000 | [diff] [blame] | 4990 | __ And(regs_.scratch0(), regs_.object(), Operand(~Page::kPageAlignmentMask)); |
| 4991 | __ lw(regs_.scratch1(), |
| 4992 | MemOperand(regs_.scratch0(), |
| 4993 | MemoryChunk::kWriteBarrierCounterOffset)); |
| 4994 | __ Subu(regs_.scratch1(), regs_.scratch1(), Operand(1)); |
| 4995 | __ sw(regs_.scratch1(), |
| 4996 | MemOperand(regs_.scratch0(), |
| 4997 | MemoryChunk::kWriteBarrierCounterOffset)); |
| 4998 | __ Branch(&need_incremental, lt, regs_.scratch1(), Operand(zero_reg)); |
| 4999 | |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 5000 | // Let's look at the color of the object: If it is not black we don't have |
| 5001 | // to inform the incremental marker. |
| 5002 | __ JumpIfBlack(regs_.object(), regs_.scratch0(), regs_.scratch1(), &on_black); |
| 5003 | |
| 5004 | regs_.Restore(masm); |
| 5005 | if (on_no_need == kUpdateRememberedSetOnNoNeedToInformIncrementalMarker) { |
| 5006 | __ RememberedSetHelper(object_, |
| 5007 | address_, |
| 5008 | value_, |
| 5009 | save_fp_regs_mode_, |
| 5010 | MacroAssembler::kReturnAtEnd); |
| 5011 | } else { |
| 5012 | __ Ret(); |
| 5013 | } |
| 5014 | |
| 5015 | __ bind(&on_black); |
| 5016 | |
| 5017 | // Get the value from the slot. |
| 5018 | __ lw(regs_.scratch0(), MemOperand(regs_.address(), 0)); |
| 5019 | |
| 5020 | if (mode == INCREMENTAL_COMPACTION) { |
| 5021 | Label ensure_not_white; |
| 5022 | |
| 5023 | __ CheckPageFlag(regs_.scratch0(), // Contains value. |
| 5024 | regs_.scratch1(), // Scratch. |
| 5025 | MemoryChunk::kEvacuationCandidateMask, |
| 5026 | eq, |
| 5027 | &ensure_not_white); |
| 5028 | |
| 5029 | __ CheckPageFlag(regs_.object(), |
| 5030 | regs_.scratch1(), // Scratch. |
| 5031 | MemoryChunk::kSkipEvacuationSlotsRecordingMask, |
| 5032 | eq, |
| 5033 | &need_incremental); |
| 5034 | |
| 5035 | __ bind(&ensure_not_white); |
| 5036 | } |
| 5037 | |
| 5038 | // We need extra registers for this, so we push the object and the address |
| 5039 | // register temporarily. |
| 5040 | __ Push(regs_.object(), regs_.address()); |
| 5041 | __ EnsureNotWhite(regs_.scratch0(), // The value. |
| 5042 | regs_.scratch1(), // Scratch. |
| 5043 | regs_.object(), // Scratch. |
| 5044 | regs_.address(), // Scratch. |
| 5045 | &need_incremental_pop_scratch); |
| 5046 | __ Pop(regs_.object(), regs_.address()); |
| 5047 | |
| 5048 | regs_.Restore(masm); |
| 5049 | if (on_no_need == kUpdateRememberedSetOnNoNeedToInformIncrementalMarker) { |
| 5050 | __ RememberedSetHelper(object_, |
| 5051 | address_, |
| 5052 | value_, |
| 5053 | save_fp_regs_mode_, |
| 5054 | MacroAssembler::kReturnAtEnd); |
| 5055 | } else { |
| 5056 | __ Ret(); |
| 5057 | } |
| 5058 | |
| 5059 | __ bind(&need_incremental_pop_scratch); |
| 5060 | __ Pop(regs_.object(), regs_.address()); |
| 5061 | |
| 5062 | __ bind(&need_incremental); |
| 5063 | |
| 5064 | // Fall through when we need to inform the incremental marker. |
| 5065 | } |
| 5066 | |
| 5067 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5068 | void StoreArrayLiteralElementStub::Generate(MacroAssembler* masm) { |
| 5069 | // ----------- S t a t e ------------- |
| 5070 | // -- a0 : element value to store |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5071 | // -- a3 : element index as smi |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 5072 | // -- sp[0] : array literal index in function as smi |
| 5073 | // -- sp[4] : array literal |
| 5074 | // clobbers a1, a2, t0 |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5075 | // ----------------------------------- |
| 5076 | |
| 5077 | Label element_done; |
| 5078 | Label double_elements; |
| 5079 | Label smi_element; |
| 5080 | Label slow_elements; |
| 5081 | Label fast_elements; |
| 5082 | |
dslomov@chromium.org | b752d40 | 2013-06-18 11:54:54 +0000 | [diff] [blame] | 5083 | // Get array literal index, array literal and its map. |
| 5084 | __ lw(t0, MemOperand(sp, 0 * kPointerSize)); |
| 5085 | __ lw(a1, MemOperand(sp, 1 * kPointerSize)); |
| 5086 | __ lw(a2, FieldMemOperand(a1, JSObject::kMapOffset)); |
| 5087 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5088 | __ CheckFastElements(a2, t1, &double_elements); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 5089 | // Check for FAST_*_SMI_ELEMENTS or FAST_*_ELEMENTS elements |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5090 | __ JumpIfSmi(a0, &smi_element); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 5091 | __ CheckFastSmiElements(a2, t1, &fast_elements); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5092 | |
| 5093 | // Store into the array literal requires a elements transition. Call into |
| 5094 | // the runtime. |
| 5095 | __ bind(&slow_elements); |
| 5096 | // call. |
| 5097 | __ Push(a1, a3, a0); |
| 5098 | __ lw(t1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 5099 | __ lw(t1, FieldMemOperand(t1, JSFunction::kLiteralsOffset)); |
| 5100 | __ Push(t1, t0); |
| 5101 | __ TailCallRuntime(Runtime::kStoreArrayLiteralElement, 5, 1); |
| 5102 | |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 5103 | // Array literal has ElementsKind of FAST_*_ELEMENTS and value is an object. |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5104 | __ bind(&fast_elements); |
| 5105 | __ lw(t1, FieldMemOperand(a1, JSObject::kElementsOffset)); |
| 5106 | __ sll(t2, a3, kPointerSizeLog2 - kSmiTagSize); |
| 5107 | __ Addu(t2, t1, t2); |
| 5108 | __ Addu(t2, t2, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 5109 | __ sw(a0, MemOperand(t2, 0)); |
| 5110 | // Update the write barrier for the array store. |
| 5111 | __ RecordWrite(t1, t2, a0, kRAHasNotBeenSaved, kDontSaveFPRegs, |
| 5112 | EMIT_REMEMBERED_SET, OMIT_SMI_CHECK); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5113 | __ Ret(USE_DELAY_SLOT); |
| 5114 | __ mov(v0, a0); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5115 | |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 5116 | // Array literal has ElementsKind of FAST_*_SMI_ELEMENTS or FAST_*_ELEMENTS, |
| 5117 | // and value is Smi. |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5118 | __ bind(&smi_element); |
| 5119 | __ lw(t1, FieldMemOperand(a1, JSObject::kElementsOffset)); |
| 5120 | __ sll(t2, a3, kPointerSizeLog2 - kSmiTagSize); |
| 5121 | __ Addu(t2, t1, t2); |
| 5122 | __ sw(a0, FieldMemOperand(t2, FixedArray::kHeaderSize)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5123 | __ Ret(USE_DELAY_SLOT); |
| 5124 | __ mov(v0, a0); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5125 | |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 5126 | // Array literal has ElementsKind of FAST_*_DOUBLE_ELEMENTS. |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5127 | __ bind(&double_elements); |
| 5128 | __ lw(t1, FieldMemOperand(a1, JSObject::kElementsOffset)); |
mstarzinger@chromium.org | 1f410f9 | 2013-08-29 08:13:16 +0000 | [diff] [blame] | 5129 | __ StoreNumberToDoubleElements(a0, a3, t1, t3, t5, a2, &slow_elements); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5130 | __ Ret(USE_DELAY_SLOT); |
| 5131 | __ mov(v0, a0); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 5132 | } |
| 5133 | |
| 5134 | |
mstarzinger@chromium.org | e3b8d0f | 2013-02-01 09:06:41 +0000 | [diff] [blame] | 5135 | void StubFailureTrampolineStub::Generate(MacroAssembler* masm) { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 5136 | CEntryStub ces(1, fp_registers_ ? kSaveFPRegs : kDontSaveFPRegs); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 5137 | __ Call(ces.GetCode(masm->isolate()), RelocInfo::CODE_TARGET); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5138 | int parameter_count_offset = |
| 5139 | StubFailureTrampolineFrame::kCallerStackParameterCountFrameOffset; |
| 5140 | __ lw(a1, MemOperand(fp, parameter_count_offset)); |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 5141 | if (function_mode_ == JS_FUNCTION_STUB_MODE) { |
| 5142 | __ Addu(a1, a1, Operand(1)); |
| 5143 | } |
mstarzinger@chromium.org | e3b8d0f | 2013-02-01 09:06:41 +0000 | [diff] [blame] | 5144 | masm->LeaveFrame(StackFrame::STUB_FAILURE_TRAMPOLINE); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5145 | __ sll(a1, a1, kPointerSizeLog2); |
verwaest@chromium.org | 8a00e82 | 2013-06-10 15:11:22 +0000 | [diff] [blame] | 5146 | __ Ret(USE_DELAY_SLOT); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 5147 | __ Addu(sp, sp, a1); |
mstarzinger@chromium.org | e3b8d0f | 2013-02-01 09:06:41 +0000 | [diff] [blame] | 5148 | } |
| 5149 | |
| 5150 | |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 5151 | void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) { |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 5152 | if (masm->isolate()->function_entry_hook() != NULL) { |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 5153 | ProfileEntryHookStub stub; |
| 5154 | __ push(ra); |
| 5155 | __ CallStub(&stub); |
| 5156 | __ pop(ra); |
| 5157 | } |
| 5158 | } |
| 5159 | |
| 5160 | |
| 5161 | void ProfileEntryHookStub::Generate(MacroAssembler* masm) { |
| 5162 | // The entry hook is a "push ra" instruction, followed by a call. |
| 5163 | // Note: on MIPS "push" is 2 instruction |
| 5164 | const int32_t kReturnAddressDistanceFromFunctionStart = |
| 5165 | Assembler::kCallTargetAddressOffset + (2 * Assembler::kInstrSize); |
| 5166 | |
jkummerow@chromium.org | 93a47f4 | 2013-07-02 14:43:41 +0000 | [diff] [blame] | 5167 | // This should contain all kJSCallerSaved registers. |
| 5168 | const RegList kSavedRegs = |
| 5169 | kJSCallerSaved | // Caller saved registers. |
| 5170 | s5.bit(); // Saved stack pointer. |
| 5171 | |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 5172 | // We also save ra, so the count here is one higher than the mask indicates. |
jkummerow@chromium.org | 93a47f4 | 2013-07-02 14:43:41 +0000 | [diff] [blame] | 5173 | const int32_t kNumSavedRegs = kNumJSCallerSaved + 2; |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 5174 | |
| 5175 | // Save all caller-save registers as this may be called from anywhere. |
jkummerow@chromium.org | 93a47f4 | 2013-07-02 14:43:41 +0000 | [diff] [blame] | 5176 | __ MultiPush(kSavedRegs | ra.bit()); |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 5177 | |
| 5178 | // Compute the function's address for the first argument. |
| 5179 | __ Subu(a0, ra, Operand(kReturnAddressDistanceFromFunctionStart)); |
| 5180 | |
| 5181 | // The caller's return address is above the saved temporaries. |
| 5182 | // Grab that for the second argument to the hook. |
| 5183 | __ Addu(a1, sp, Operand(kNumSavedRegs * kPointerSize)); |
| 5184 | |
| 5185 | // Align the stack if necessary. |
| 5186 | int frame_alignment = masm->ActivationFrameAlignment(); |
| 5187 | if (frame_alignment > kPointerSize) { |
jkummerow@chromium.org | 93a47f4 | 2013-07-02 14:43:41 +0000 | [diff] [blame] | 5188 | __ mov(s5, sp); |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 5189 | ASSERT(IsPowerOf2(frame_alignment)); |
| 5190 | __ And(sp, sp, Operand(-frame_alignment)); |
| 5191 | } |
machenbach@chromium.org | 8297530 | 2014-02-06 01:06:18 +0000 | [diff] [blame] | 5192 | __ Subu(sp, sp, kCArgsSlotsSize); |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 5193 | #if defined(V8_HOST_ARCH_MIPS) |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 5194 | int32_t entry_hook = |
| 5195 | reinterpret_cast<int32_t>(masm->isolate()->function_entry_hook()); |
machenbach@chromium.org | 8297530 | 2014-02-06 01:06:18 +0000 | [diff] [blame] | 5196 | __ li(t9, Operand(entry_hook)); |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 5197 | #else |
| 5198 | // Under the simulator we need to indirect the entry hook through a |
| 5199 | // trampoline function at a known address. |
dslomov@chromium.org | e97852d | 2013-09-12 09:02:59 +0000 | [diff] [blame] | 5200 | // It additionally takes an isolate as a third parameter. |
| 5201 | __ li(a2, Operand(ExternalReference::isolate_address(masm->isolate()))); |
| 5202 | |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 5203 | ApiFunction dispatcher(FUNCTION_ADDR(EntryHookTrampoline)); |
machenbach@chromium.org | 8297530 | 2014-02-06 01:06:18 +0000 | [diff] [blame] | 5204 | __ li(t9, Operand(ExternalReference(&dispatcher, |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 5205 | ExternalReference::BUILTIN_CALL, |
| 5206 | masm->isolate()))); |
| 5207 | #endif |
machenbach@chromium.org | 8297530 | 2014-02-06 01:06:18 +0000 | [diff] [blame] | 5208 | // Call C function through t9 to conform ABI for PIC. |
| 5209 | __ Call(t9); |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 5210 | |
| 5211 | // Restore the stack pointer if needed. |
| 5212 | if (frame_alignment > kPointerSize) { |
jkummerow@chromium.org | 93a47f4 | 2013-07-02 14:43:41 +0000 | [diff] [blame] | 5213 | __ mov(sp, s5); |
machenbach@chromium.org | 8297530 | 2014-02-06 01:06:18 +0000 | [diff] [blame] | 5214 | } else { |
| 5215 | __ Addu(sp, sp, kCArgsSlotsSize); |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 5216 | } |
| 5217 | |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 5218 | // Also pop ra to get Ret(0). |
jkummerow@chromium.org | 93a47f4 | 2013-07-02 14:43:41 +0000 | [diff] [blame] | 5219 | __ MultiPop(kSavedRegs | ra.bit()); |
danno@chromium.org | 129d398 | 2012-07-25 15:01:47 +0000 | [diff] [blame] | 5220 | __ Ret(); |
| 5221 | } |
| 5222 | |
| 5223 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5224 | template<class T> |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5225 | static void CreateArrayDispatch(MacroAssembler* masm, |
| 5226 | AllocationSiteOverrideMode mode) { |
| 5227 | if (mode == DISABLE_ALLOCATION_SITES) { |
machenbach@chromium.org | 0345396 | 2014-01-10 14:16:31 +0000 | [diff] [blame] | 5228 | T stub(GetInitialFastElementsKind(), mode); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5229 | __ TailCallStub(&stub); |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5230 | } else if (mode == DONT_OVERRIDE) { |
| 5231 | int last_index = GetSequenceIndexFromFastElementsKind( |
| 5232 | TERMINAL_FAST_ELEMENTS_KIND); |
| 5233 | for (int i = 0; i <= last_index; ++i) { |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5234 | ElementsKind kind = GetFastElementsKindFromSequenceIndex(i); |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5235 | T stub(kind); |
ulan@chromium.org | 0f13e74 | 2014-01-03 15:51:11 +0000 | [diff] [blame] | 5236 | __ TailCallStub(&stub, eq, a3, Operand(kind)); |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5237 | } |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5238 | |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5239 | // If we reached this point there is a problem. |
| 5240 | __ Abort(kUnexpectedElementsKindInArrayConstructor); |
| 5241 | } else { |
| 5242 | UNREACHABLE(); |
| 5243 | } |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5244 | } |
| 5245 | |
| 5246 | |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5247 | static void CreateArrayDispatchOneArgument(MacroAssembler* masm, |
| 5248 | AllocationSiteOverrideMode mode) { |
machenbach@chromium.org | 6d26cbb | 2014-01-22 10:50:56 +0000 | [diff] [blame] | 5249 | // a2 - allocation site (if mode != DISABLE_ALLOCATION_SITES) |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5250 | // a3 - kind (if mode != DISABLE_ALLOCATION_SITES) |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5251 | // a0 - number of arguments |
| 5252 | // a1 - constructor? |
| 5253 | // sp[0] - last argument |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5254 | Label normal_sequence; |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5255 | if (mode == DONT_OVERRIDE) { |
| 5256 | ASSERT(FAST_SMI_ELEMENTS == 0); |
| 5257 | ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 5258 | ASSERT(FAST_ELEMENTS == 2); |
| 5259 | ASSERT(FAST_HOLEY_ELEMENTS == 3); |
| 5260 | ASSERT(FAST_DOUBLE_ELEMENTS == 4); |
| 5261 | ASSERT(FAST_HOLEY_DOUBLE_ELEMENTS == 5); |
| 5262 | |
| 5263 | // is the low bit set? If so, we are holey and that is good. |
| 5264 | __ And(at, a3, Operand(1)); |
| 5265 | __ Branch(&normal_sequence, ne, at, Operand(zero_reg)); |
| 5266 | } |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5267 | |
| 5268 | // look at the first argument |
| 5269 | __ lw(t1, MemOperand(sp, 0)); |
| 5270 | __ Branch(&normal_sequence, eq, t1, Operand(zero_reg)); |
| 5271 | |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5272 | if (mode == DISABLE_ALLOCATION_SITES) { |
| 5273 | ElementsKind initial = GetInitialFastElementsKind(); |
| 5274 | ElementsKind holey_initial = GetHoleyElementsKind(initial); |
palfia@homejinni.com | 07237aa | 2013-07-01 08:01:48 +0000 | [diff] [blame] | 5275 | |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5276 | ArraySingleArgumentConstructorStub stub_holey(holey_initial, |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5277 | DISABLE_ALLOCATION_SITES); |
| 5278 | __ TailCallStub(&stub_holey); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5279 | |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5280 | __ bind(&normal_sequence); |
| 5281 | ArraySingleArgumentConstructorStub stub(initial, |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5282 | DISABLE_ALLOCATION_SITES); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5283 | __ TailCallStub(&stub); |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5284 | } else if (mode == DONT_OVERRIDE) { |
| 5285 | // We are going to create a holey array, but our kind is non-holey. |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 5286 | // Fix kind and retry (only if we have an allocation site in the slot). |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5287 | __ Addu(a3, a3, Operand(1)); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5288 | |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5289 | if (FLAG_debug_code) { |
machenbach@chromium.org | 6d26cbb | 2014-01-22 10:50:56 +0000 | [diff] [blame] | 5290 | __ lw(t1, FieldMemOperand(a2, 0)); |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5291 | __ LoadRoot(at, Heap::kAllocationSiteMapRootIndex); |
machenbach@chromium.org | 6d26cbb | 2014-01-22 10:50:56 +0000 | [diff] [blame] | 5292 | __ Assert(eq, kExpectedAllocationSite, t1, Operand(at)); |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5293 | } |
| 5294 | |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 5295 | // Save the resulting elements kind in type info. We can't just store a3 |
| 5296 | // in the AllocationSite::transition_info field because elements kind is |
| 5297 | // restricted to a portion of the field...upper bits need to be left alone. |
| 5298 | STATIC_ASSERT(AllocationSite::ElementsKindBits::kShift == 0); |
machenbach@chromium.org | 6d26cbb | 2014-01-22 10:50:56 +0000 | [diff] [blame] | 5299 | __ lw(t0, FieldMemOperand(a2, AllocationSite::kTransitionInfoOffset)); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 5300 | __ Addu(t0, t0, Operand(Smi::FromInt(kFastElementsKindPackedToHoley))); |
machenbach@chromium.org | 6d26cbb | 2014-01-22 10:50:56 +0000 | [diff] [blame] | 5301 | __ sw(t0, FieldMemOperand(a2, AllocationSite::kTransitionInfoOffset)); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 5302 | |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5303 | |
| 5304 | __ bind(&normal_sequence); |
| 5305 | int last_index = GetSequenceIndexFromFastElementsKind( |
| 5306 | TERMINAL_FAST_ELEMENTS_KIND); |
| 5307 | for (int i = 0; i <= last_index; ++i) { |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5308 | ElementsKind kind = GetFastElementsKindFromSequenceIndex(i); |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5309 | ArraySingleArgumentConstructorStub stub(kind); |
ulan@chromium.org | 0f13e74 | 2014-01-03 15:51:11 +0000 | [diff] [blame] | 5310 | __ TailCallStub(&stub, eq, a3, Operand(kind)); |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5311 | } |
| 5312 | |
| 5313 | // If we reached this point there is a problem. |
| 5314 | __ Abort(kUnexpectedElementsKindInArrayConstructor); |
| 5315 | } else { |
| 5316 | UNREACHABLE(); |
| 5317 | } |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5318 | } |
| 5319 | |
| 5320 | |
| 5321 | template<class T> |
| 5322 | static void ArrayConstructorStubAheadOfTimeHelper(Isolate* isolate) { |
| 5323 | int to_index = GetSequenceIndexFromFastElementsKind( |
| 5324 | TERMINAL_FAST_ELEMENTS_KIND); |
| 5325 | for (int i = 0; i <= to_index; ++i) { |
| 5326 | ElementsKind kind = GetFastElementsKindFromSequenceIndex(i); |
| 5327 | T stub(kind); |
machenbach@chromium.org | ce9c514 | 2013-12-03 08:00:39 +0000 | [diff] [blame] | 5328 | stub.GetCode(isolate); |
ulan@chromium.org | 9cbaabd | 2014-01-08 10:55:36 +0000 | [diff] [blame] | 5329 | if (AllocationSite::GetMode(kind) != DONT_TRACK_ALLOCATION_SITE) { |
machenbach@chromium.org | 0345396 | 2014-01-10 14:16:31 +0000 | [diff] [blame] | 5330 | T stub1(kind, DISABLE_ALLOCATION_SITES); |
machenbach@chromium.org | ce9c514 | 2013-12-03 08:00:39 +0000 | [diff] [blame] | 5331 | stub1.GetCode(isolate); |
verwaest@chromium.org | d4be0f0 | 2013-06-05 13:39:03 +0000 | [diff] [blame] | 5332 | } |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5333 | } |
| 5334 | } |
| 5335 | |
| 5336 | |
| 5337 | void ArrayConstructorStubBase::GenerateStubsAheadOfTime(Isolate* isolate) { |
| 5338 | ArrayConstructorStubAheadOfTimeHelper<ArrayNoArgumentConstructorStub>( |
| 5339 | isolate); |
| 5340 | ArrayConstructorStubAheadOfTimeHelper<ArraySingleArgumentConstructorStub>( |
| 5341 | isolate); |
| 5342 | ArrayConstructorStubAheadOfTimeHelper<ArrayNArgumentsConstructorStub>( |
| 5343 | isolate); |
| 5344 | } |
| 5345 | |
| 5346 | |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5347 | void InternalArrayConstructorStubBase::GenerateStubsAheadOfTime( |
| 5348 | Isolate* isolate) { |
| 5349 | ElementsKind kinds[2] = { FAST_ELEMENTS, FAST_HOLEY_ELEMENTS }; |
| 5350 | for (int i = 0; i < 2; i++) { |
| 5351 | // For internal arrays we only need a few things. |
| 5352 | InternalArrayNoArgumentConstructorStub stubh1(kinds[i]); |
machenbach@chromium.org | ce9c514 | 2013-12-03 08:00:39 +0000 | [diff] [blame] | 5353 | stubh1.GetCode(isolate); |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5354 | InternalArraySingleArgumentConstructorStub stubh2(kinds[i]); |
machenbach@chromium.org | ce9c514 | 2013-12-03 08:00:39 +0000 | [diff] [blame] | 5355 | stubh2.GetCode(isolate); |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5356 | InternalArrayNArgumentsConstructorStub stubh3(kinds[i]); |
machenbach@chromium.org | ce9c514 | 2013-12-03 08:00:39 +0000 | [diff] [blame] | 5357 | stubh3.GetCode(isolate); |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5358 | } |
| 5359 | } |
| 5360 | |
| 5361 | |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5362 | void ArrayConstructorStub::GenerateDispatchToArrayStub( |
| 5363 | MacroAssembler* masm, |
| 5364 | AllocationSiteOverrideMode mode) { |
| 5365 | if (argument_count_ == ANY) { |
| 5366 | Label not_zero_case, not_one_case; |
| 5367 | __ And(at, a0, a0); |
| 5368 | __ Branch(¬_zero_case, ne, at, Operand(zero_reg)); |
| 5369 | CreateArrayDispatch<ArrayNoArgumentConstructorStub>(masm, mode); |
| 5370 | |
| 5371 | __ bind(¬_zero_case); |
| 5372 | __ Branch(¬_one_case, gt, a0, Operand(1)); |
| 5373 | CreateArrayDispatchOneArgument(masm, mode); |
| 5374 | |
| 5375 | __ bind(¬_one_case); |
| 5376 | CreateArrayDispatch<ArrayNArgumentsConstructorStub>(masm, mode); |
| 5377 | } else if (argument_count_ == NONE) { |
| 5378 | CreateArrayDispatch<ArrayNoArgumentConstructorStub>(masm, mode); |
| 5379 | } else if (argument_count_ == ONE) { |
| 5380 | CreateArrayDispatchOneArgument(masm, mode); |
| 5381 | } else if (argument_count_ == MORE_THAN_ONE) { |
| 5382 | CreateArrayDispatch<ArrayNArgumentsConstructorStub>(masm, mode); |
| 5383 | } else { |
| 5384 | UNREACHABLE(); |
| 5385 | } |
| 5386 | } |
| 5387 | |
| 5388 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5389 | void ArrayConstructorStub::Generate(MacroAssembler* masm) { |
| 5390 | // ----------- S t a t e ------------- |
| 5391 | // -- a0 : argc (only if argument_count_ == ANY) |
| 5392 | // -- a1 : constructor |
machenbach@chromium.org | 69f64b1 | 2014-03-20 01:04:55 +0000 | [diff] [blame] | 5393 | // -- a2 : AllocationSite or undefined |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5394 | // -- sp[0] : return address |
| 5395 | // -- sp[4] : last argument |
| 5396 | // ----------------------------------- |
machenbach@chromium.org | ca2f204 | 2014-03-10 10:03:12 +0000 | [diff] [blame] | 5397 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5398 | if (FLAG_debug_code) { |
| 5399 | // The array construct code is only set for the global and natives |
| 5400 | // builtin Array functions which always have maps. |
| 5401 | |
| 5402 | // Initial map for the builtin Array function should be a map. |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 5403 | __ lw(t0, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset)); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5404 | // Will both indicate a NULL and a Smi. |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 5405 | __ SmiTst(t0, at); |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 5406 | __ Assert(ne, kUnexpectedInitialMapForArrayFunction, |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5407 | at, Operand(zero_reg)); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 5408 | __ GetObjectType(t0, t0, t1); |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 5409 | __ Assert(eq, kUnexpectedInitialMapForArrayFunction, |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 5410 | t1, Operand(MAP_TYPE)); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5411 | |
machenbach@chromium.org | 69f64b1 | 2014-03-20 01:04:55 +0000 | [diff] [blame] | 5412 | // We should either have undefined in a2 or a valid AllocationSite |
| 5413 | __ AssertUndefinedOrAllocationSite(a2, t0); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5414 | } |
| 5415 | |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5416 | Label no_info; |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 5417 | // Get the elements kind and case on that. |
machenbach@chromium.org | 69f64b1 | 2014-03-20 01:04:55 +0000 | [diff] [blame] | 5418 | __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
danno@chromium.org | bee5199 | 2013-07-10 14:57:15 +0000 | [diff] [blame] | 5419 | __ Branch(&no_info, eq, a2, Operand(at)); |
danno@chromium.org | bee5199 | 2013-07-10 14:57:15 +0000 | [diff] [blame] | 5420 | |
machenbach@chromium.org | 6d26cbb | 2014-01-22 10:50:56 +0000 | [diff] [blame] | 5421 | __ lw(a3, FieldMemOperand(a2, AllocationSite::kTransitionInfoOffset)); |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 5422 | __ SmiUntag(a3); |
machenbach@chromium.org | b5be0a9 | 2013-11-15 10:32:41 +0000 | [diff] [blame] | 5423 | STATIC_ASSERT(AllocationSite::ElementsKindBits::kShift == 0); |
| 5424 | __ And(a3, a3, Operand(AllocationSite::ElementsKindBits::kMask)); |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5425 | GenerateDispatchToArrayStub(masm, DONT_OVERRIDE); |
| 5426 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 5427 | __ bind(&no_info); |
dslomov@chromium.org | 4a35c5a | 2013-09-13 07:28:52 +0000 | [diff] [blame] | 5428 | GenerateDispatchToArrayStub(masm, DISABLE_ALLOCATION_SITES); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 5429 | } |
| 5430 | |
| 5431 | |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5432 | void InternalArrayConstructorStub::GenerateCase( |
| 5433 | MacroAssembler* masm, ElementsKind kind) { |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5434 | |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5435 | InternalArrayNoArgumentConstructorStub stub0(kind); |
ulan@chromium.org | 0f13e74 | 2014-01-03 15:51:11 +0000 | [diff] [blame] | 5436 | __ TailCallStub(&stub0, lo, a0, Operand(1)); |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5437 | |
ulan@chromium.org | 0f13e74 | 2014-01-03 15:51:11 +0000 | [diff] [blame] | 5438 | InternalArrayNArgumentsConstructorStub stubN(kind); |
| 5439 | __ TailCallStub(&stubN, hi, a0, Operand(1)); |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5440 | |
| 5441 | if (IsFastPackedElementsKind(kind)) { |
| 5442 | // We might need to create a holey array |
| 5443 | // look at the first argument. |
| 5444 | __ lw(at, MemOperand(sp, 0)); |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5445 | |
| 5446 | InternalArraySingleArgumentConstructorStub |
| 5447 | stub1_holey(GetHoleyElementsKind(kind)); |
ulan@chromium.org | 0f13e74 | 2014-01-03 15:51:11 +0000 | [diff] [blame] | 5448 | __ TailCallStub(&stub1_holey, ne, at, Operand(zero_reg)); |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5449 | } |
| 5450 | |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5451 | InternalArraySingleArgumentConstructorStub stub1(kind); |
| 5452 | __ TailCallStub(&stub1); |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5453 | } |
| 5454 | |
| 5455 | |
| 5456 | void InternalArrayConstructorStub::Generate(MacroAssembler* masm) { |
| 5457 | // ----------- S t a t e ------------- |
| 5458 | // -- a0 : argc |
| 5459 | // -- a1 : constructor |
| 5460 | // -- sp[0] : return address |
| 5461 | // -- sp[4] : last argument |
| 5462 | // ----------------------------------- |
| 5463 | |
| 5464 | if (FLAG_debug_code) { |
| 5465 | // The array construct code is only set for the global and natives |
| 5466 | // builtin Array functions which always have maps. |
| 5467 | |
| 5468 | // Initial map for the builtin Array function should be a map. |
| 5469 | __ lw(a3, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset)); |
| 5470 | // Will both indicate a NULL and a Smi. |
machenbach@chromium.org | 7ff7607 | 2013-11-21 09:47:43 +0000 | [diff] [blame] | 5471 | __ SmiTst(a3, at); |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 5472 | __ Assert(ne, kUnexpectedInitialMapForArrayFunction, |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5473 | at, Operand(zero_reg)); |
| 5474 | __ GetObjectType(a3, a3, t0); |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 5475 | __ Assert(eq, kUnexpectedInitialMapForArrayFunction, |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5476 | t0, Operand(MAP_TYPE)); |
| 5477 | } |
| 5478 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 5479 | // Figure out the right elements kind. |
| 5480 | __ lw(a3, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset)); |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5481 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 5482 | // Load the map's "bit field 2" into a3. We only need the first byte, |
| 5483 | // but the following bit field extraction takes care of that anyway. |
| 5484 | __ lbu(a3, FieldMemOperand(a3, Map::kBitField2Offset)); |
| 5485 | // Retrieve elements_kind from bit field 2. |
| 5486 | __ Ext(a3, a3, Map::kElementsKindShift, Map::kElementsKindBitCount); |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5487 | |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 5488 | if (FLAG_debug_code) { |
| 5489 | Label done; |
| 5490 | __ Branch(&done, eq, a3, Operand(FAST_ELEMENTS)); |
| 5491 | __ Assert( |
danno@chromium.org | 5940060 | 2013-08-13 17:09:37 +0000 | [diff] [blame] | 5492 | eq, kInvalidElementsKindForInternalArrayOrInternalPackedArray, |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 5493 | a3, Operand(FAST_HOLEY_ELEMENTS)); |
| 5494 | __ bind(&done); |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5495 | } |
mstarzinger@chromium.org | 1510d58 | 2013-06-28 14:00:48 +0000 | [diff] [blame] | 5496 | |
| 5497 | Label fast_elements_case; |
| 5498 | __ Branch(&fast_elements_case, eq, a3, Operand(FAST_ELEMENTS)); |
| 5499 | GenerateCase(masm, FAST_HOLEY_ELEMENTS); |
| 5500 | |
| 5501 | __ bind(&fast_elements_case); |
| 5502 | GenerateCase(masm, FAST_ELEMENTS); |
palfia@homejinni.com | 46d4fbd | 2013-06-05 22:27:04 +0000 | [diff] [blame] | 5503 | } |
| 5504 | |
| 5505 | |
machenbach@chromium.org | e014e5b | 2014-01-28 07:51:38 +0000 | [diff] [blame] | 5506 | void CallApiFunctionStub::Generate(MacroAssembler* masm) { |
| 5507 | // ----------- S t a t e ------------- |
| 5508 | // -- a0 : callee |
| 5509 | // -- t0 : call_data |
| 5510 | // -- a2 : holder |
machenbach@chromium.org | 57a54ac | 2014-01-31 14:01:53 +0000 | [diff] [blame] | 5511 | // -- a1 : api_function_address |
machenbach@chromium.org | e014e5b | 2014-01-28 07:51:38 +0000 | [diff] [blame] | 5512 | // -- cp : context |
| 5513 | // -- |
| 5514 | // -- sp[0] : last argument |
| 5515 | // -- ... |
| 5516 | // -- sp[(argc - 1)* 4] : first argument |
| 5517 | // -- sp[argc * 4] : receiver |
| 5518 | // ----------------------------------- |
| 5519 | |
| 5520 | Register callee = a0; |
| 5521 | Register call_data = t0; |
| 5522 | Register holder = a2; |
machenbach@chromium.org | 57a54ac | 2014-01-31 14:01:53 +0000 | [diff] [blame] | 5523 | Register api_function_address = a1; |
machenbach@chromium.org | e014e5b | 2014-01-28 07:51:38 +0000 | [diff] [blame] | 5524 | Register context = cp; |
| 5525 | |
| 5526 | int argc = ArgumentBits::decode(bit_field_); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 5527 | bool is_store = IsStoreBits::decode(bit_field_); |
machenbach@chromium.org | e014e5b | 2014-01-28 07:51:38 +0000 | [diff] [blame] | 5528 | bool call_data_undefined = CallDataUndefinedBits::decode(bit_field_); |
| 5529 | |
| 5530 | typedef FunctionCallbackArguments FCA; |
| 5531 | |
| 5532 | STATIC_ASSERT(FCA::kContextSaveIndex == 6); |
| 5533 | STATIC_ASSERT(FCA::kCalleeIndex == 5); |
| 5534 | STATIC_ASSERT(FCA::kDataIndex == 4); |
| 5535 | STATIC_ASSERT(FCA::kReturnValueOffset == 3); |
| 5536 | STATIC_ASSERT(FCA::kReturnValueDefaultValueIndex == 2); |
| 5537 | STATIC_ASSERT(FCA::kIsolateIndex == 1); |
| 5538 | STATIC_ASSERT(FCA::kHolderIndex == 0); |
| 5539 | STATIC_ASSERT(FCA::kArgsLength == 7); |
| 5540 | |
| 5541 | Isolate* isolate = masm->isolate(); |
| 5542 | |
| 5543 | // Save context, callee and call data. |
| 5544 | __ Push(context, callee, call_data); |
| 5545 | // Load context from callee. |
| 5546 | __ lw(context, FieldMemOperand(callee, JSFunction::kContextOffset)); |
| 5547 | |
| 5548 | Register scratch = call_data; |
| 5549 | if (!call_data_undefined) { |
| 5550 | __ LoadRoot(scratch, Heap::kUndefinedValueRootIndex); |
| 5551 | } |
| 5552 | // Push return value and default return value. |
| 5553 | __ Push(scratch, scratch); |
| 5554 | __ li(scratch, |
| 5555 | Operand(ExternalReference::isolate_address(isolate))); |
| 5556 | // Push isolate and holder. |
| 5557 | __ Push(scratch, holder); |
| 5558 | |
| 5559 | // Prepare arguments. |
| 5560 | __ mov(scratch, sp); |
| 5561 | |
| 5562 | // Allocate the v8::Arguments structure in the arguments' space since |
| 5563 | // it's not controlled by GC. |
| 5564 | const int kApiStackSpace = 4; |
| 5565 | |
| 5566 | FrameScope frame_scope(masm, StackFrame::MANUAL); |
| 5567 | __ EnterExitFrame(false, kApiStackSpace); |
| 5568 | |
machenbach@chromium.org | 57a54ac | 2014-01-31 14:01:53 +0000 | [diff] [blame] | 5569 | ASSERT(!api_function_address.is(a0) && !scratch.is(a0)); |
machenbach@chromium.org | e014e5b | 2014-01-28 07:51:38 +0000 | [diff] [blame] | 5570 | // a0 = FunctionCallbackInfo& |
| 5571 | // Arguments is after the return address. |
| 5572 | __ Addu(a0, sp, Operand(1 * kPointerSize)); |
| 5573 | // FunctionCallbackInfo::implicit_args_ |
| 5574 | __ sw(scratch, MemOperand(a0, 0 * kPointerSize)); |
| 5575 | // FunctionCallbackInfo::values_ |
| 5576 | __ Addu(at, scratch, Operand((FCA::kArgsLength - 1 + argc) * kPointerSize)); |
| 5577 | __ sw(at, MemOperand(a0, 1 * kPointerSize)); |
| 5578 | // FunctionCallbackInfo::length_ = argc |
| 5579 | __ li(at, Operand(argc)); |
| 5580 | __ sw(at, MemOperand(a0, 2 * kPointerSize)); |
| 5581 | // FunctionCallbackInfo::is_construct_call = 0 |
| 5582 | __ sw(zero_reg, MemOperand(a0, 3 * kPointerSize)); |
| 5583 | |
| 5584 | const int kStackUnwindSpace = argc + FCA::kArgsLength + 1; |
| 5585 | Address thunk_address = FUNCTION_ADDR(&InvokeFunctionCallback); |
| 5586 | ExternalReference::Type thunk_type = ExternalReference::PROFILING_API_CALL; |
| 5587 | ApiFunction thunk_fun(thunk_address); |
| 5588 | ExternalReference thunk_ref = ExternalReference(&thunk_fun, thunk_type, |
| 5589 | masm->isolate()); |
| 5590 | |
| 5591 | AllowExternalCallThatCantCauseGC scope(masm); |
| 5592 | MemOperand context_restore_operand( |
| 5593 | fp, (2 + FCA::kContextSaveIndex) * kPointerSize); |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 5594 | // Stores return the first js argument. |
| 5595 | int return_value_offset = 0; |
| 5596 | if (is_store) { |
| 5597 | return_value_offset = 2 + FCA::kArgsLength; |
| 5598 | } else { |
| 5599 | return_value_offset = 2 + FCA::kReturnValueOffset; |
| 5600 | } |
| 5601 | MemOperand return_value_operand(fp, return_value_offset * kPointerSize); |
machenbach@chromium.org | e014e5b | 2014-01-28 07:51:38 +0000 | [diff] [blame] | 5602 | |
| 5603 | __ CallApiFunctionAndReturn(api_function_address, |
| 5604 | thunk_ref, |
machenbach@chromium.org | e014e5b | 2014-01-28 07:51:38 +0000 | [diff] [blame] | 5605 | kStackUnwindSpace, |
| 5606 | return_value_operand, |
titzer@chromium.org | f5a2454 | 2014-03-04 09:06:17 +0000 | [diff] [blame] | 5607 | &context_restore_operand); |
machenbach@chromium.org | e014e5b | 2014-01-28 07:51:38 +0000 | [diff] [blame] | 5608 | } |
| 5609 | |
| 5610 | |
machenbach@chromium.org | 57a54ac | 2014-01-31 14:01:53 +0000 | [diff] [blame] | 5611 | void CallApiGetterStub::Generate(MacroAssembler* masm) { |
| 5612 | // ----------- S t a t e ------------- |
| 5613 | // -- sp[0] : name |
| 5614 | // -- sp[4 - kArgsLength*4] : PropertyCallbackArguments object |
| 5615 | // -- ... |
| 5616 | // -- a2 : api_function_address |
| 5617 | // ----------------------------------- |
| 5618 | |
| 5619 | Register api_function_address = a2; |
| 5620 | |
| 5621 | __ mov(a0, sp); // a0 = Handle<Name> |
| 5622 | __ Addu(a1, a0, Operand(1 * kPointerSize)); // a1 = PCA |
| 5623 | |
| 5624 | const int kApiStackSpace = 1; |
| 5625 | FrameScope frame_scope(masm, StackFrame::MANUAL); |
| 5626 | __ EnterExitFrame(false, kApiStackSpace); |
| 5627 | |
| 5628 | // Create PropertyAccessorInfo instance on the stack above the exit frame with |
| 5629 | // a1 (internal::Object** args_) as the data. |
| 5630 | __ sw(a1, MemOperand(sp, 1 * kPointerSize)); |
| 5631 | __ Addu(a1, sp, Operand(1 * kPointerSize)); // a1 = AccessorInfo& |
| 5632 | |
| 5633 | const int kStackUnwindSpace = PropertyCallbackArguments::kArgsLength + 1; |
| 5634 | |
| 5635 | Address thunk_address = FUNCTION_ADDR(&InvokeAccessorGetterCallback); |
| 5636 | ExternalReference::Type thunk_type = |
| 5637 | ExternalReference::PROFILING_GETTER_CALL; |
| 5638 | ApiFunction thunk_fun(thunk_address); |
| 5639 | ExternalReference thunk_ref = ExternalReference(&thunk_fun, thunk_type, |
| 5640 | masm->isolate()); |
| 5641 | __ CallApiFunctionAndReturn(api_function_address, |
| 5642 | thunk_ref, |
| 5643 | kStackUnwindSpace, |
| 5644 | MemOperand(fp, 6 * kPointerSize), |
| 5645 | NULL); |
| 5646 | } |
| 5647 | |
| 5648 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 5649 | #undef __ |
| 5650 | |
| 5651 | } } // namespace v8::internal |
| 5652 | |
| 5653 | #endif // V8_TARGET_ARCH_MIPS |