Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/v8.h" |
| 6 | |
| 7 | #if V8_TARGET_ARCH_PPC |
| 8 | |
| 9 | #include "src/codegen.h" |
| 10 | #include "src/debug.h" |
| 11 | #include "src/deoptimizer.h" |
| 12 | #include "src/full-codegen.h" |
| 13 | #include "src/runtime/runtime.h" |
| 14 | |
| 15 | namespace v8 { |
| 16 | namespace internal { |
| 17 | |
| 18 | |
| 19 | #define __ ACCESS_MASM(masm) |
| 20 | |
| 21 | |
| 22 | void Builtins::Generate_Adaptor(MacroAssembler* masm, CFunctionId id, |
| 23 | BuiltinExtraArguments extra_args) { |
| 24 | // ----------- S t a t e ------------- |
| 25 | // -- r3 : number of arguments excluding receiver |
| 26 | // -- r4 : called function (only guaranteed when |
| 27 | // extra_args requires it) |
| 28 | // -- cp : context |
| 29 | // -- sp[0] : last argument |
| 30 | // -- ... |
| 31 | // -- sp[4 * (argc - 1)] : first argument (argc == r0) |
| 32 | // -- sp[4 * argc] : receiver |
| 33 | // ----------------------------------- |
| 34 | |
| 35 | // Insert extra arguments. |
| 36 | int num_extra_args = 0; |
| 37 | if (extra_args == NEEDS_CALLED_FUNCTION) { |
| 38 | num_extra_args = 1; |
| 39 | __ push(r4); |
| 40 | } else { |
| 41 | DCHECK(extra_args == NO_EXTRA_ARGUMENTS); |
| 42 | } |
| 43 | |
| 44 | // JumpToExternalReference expects r0 to contain the number of arguments |
| 45 | // including the receiver and the extra arguments. |
| 46 | __ addi(r3, r3, Operand(num_extra_args + 1)); |
| 47 | __ JumpToExternalReference(ExternalReference(id, masm->isolate())); |
| 48 | } |
| 49 | |
| 50 | |
| 51 | // Load the built-in InternalArray function from the current context. |
| 52 | static void GenerateLoadInternalArrayFunction(MacroAssembler* masm, |
| 53 | Register result) { |
| 54 | // Load the native context. |
| 55 | |
| 56 | __ LoadP(result, |
| 57 | MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
| 58 | __ LoadP(result, FieldMemOperand(result, GlobalObject::kNativeContextOffset)); |
| 59 | // Load the InternalArray function from the native context. |
| 60 | __ LoadP(result, |
| 61 | MemOperand(result, Context::SlotOffset( |
| 62 | Context::INTERNAL_ARRAY_FUNCTION_INDEX))); |
| 63 | } |
| 64 | |
| 65 | |
| 66 | // Load the built-in Array function from the current context. |
| 67 | static void GenerateLoadArrayFunction(MacroAssembler* masm, Register result) { |
| 68 | // Load the native context. |
| 69 | |
| 70 | __ LoadP(result, |
| 71 | MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
| 72 | __ LoadP(result, FieldMemOperand(result, GlobalObject::kNativeContextOffset)); |
| 73 | // Load the Array function from the native context. |
| 74 | __ LoadP( |
| 75 | result, |
| 76 | MemOperand(result, Context::SlotOffset(Context::ARRAY_FUNCTION_INDEX))); |
| 77 | } |
| 78 | |
| 79 | |
| 80 | void Builtins::Generate_InternalArrayCode(MacroAssembler* masm) { |
| 81 | // ----------- S t a t e ------------- |
| 82 | // -- r3 : number of arguments |
| 83 | // -- lr : return address |
| 84 | // -- sp[...]: constructor arguments |
| 85 | // ----------------------------------- |
| 86 | Label generic_array_code, one_or_more_arguments, two_or_more_arguments; |
| 87 | |
| 88 | // Get the InternalArray function. |
| 89 | GenerateLoadInternalArrayFunction(masm, r4); |
| 90 | |
| 91 | if (FLAG_debug_code) { |
| 92 | // Initial map for the builtin InternalArray functions should be maps. |
| 93 | __ LoadP(r5, FieldMemOperand(r4, JSFunction::kPrototypeOrInitialMapOffset)); |
| 94 | __ TestIfSmi(r5, r0); |
| 95 | __ Assert(ne, kUnexpectedInitialMapForInternalArrayFunction, cr0); |
| 96 | __ CompareObjectType(r5, r6, r7, MAP_TYPE); |
| 97 | __ Assert(eq, kUnexpectedInitialMapForInternalArrayFunction); |
| 98 | } |
| 99 | |
| 100 | // Run the native code for the InternalArray function called as a normal |
| 101 | // function. |
| 102 | // tail call a stub |
| 103 | InternalArrayConstructorStub stub(masm->isolate()); |
| 104 | __ TailCallStub(&stub); |
| 105 | } |
| 106 | |
| 107 | |
| 108 | void Builtins::Generate_ArrayCode(MacroAssembler* masm) { |
| 109 | // ----------- S t a t e ------------- |
| 110 | // -- r3 : number of arguments |
| 111 | // -- lr : return address |
| 112 | // -- sp[...]: constructor arguments |
| 113 | // ----------------------------------- |
| 114 | Label generic_array_code, one_or_more_arguments, two_or_more_arguments; |
| 115 | |
| 116 | // Get the Array function. |
| 117 | GenerateLoadArrayFunction(masm, r4); |
| 118 | |
| 119 | if (FLAG_debug_code) { |
| 120 | // Initial map for the builtin Array functions should be maps. |
| 121 | __ LoadP(r5, FieldMemOperand(r4, JSFunction::kPrototypeOrInitialMapOffset)); |
| 122 | __ TestIfSmi(r5, r0); |
| 123 | __ Assert(ne, kUnexpectedInitialMapForArrayFunction, cr0); |
| 124 | __ CompareObjectType(r5, r6, r7, MAP_TYPE); |
| 125 | __ Assert(eq, kUnexpectedInitialMapForArrayFunction); |
| 126 | } |
| 127 | |
| 128 | // Run the native code for the Array function called as a normal function. |
| 129 | // tail call a stub |
| 130 | __ LoadRoot(r5, Heap::kUndefinedValueRootIndex); |
| 131 | ArrayConstructorStub stub(masm->isolate()); |
| 132 | __ TailCallStub(&stub); |
| 133 | } |
| 134 | |
| 135 | |
| 136 | void Builtins::Generate_StringConstructCode(MacroAssembler* masm) { |
| 137 | // ----------- S t a t e ------------- |
| 138 | // -- r3 : number of arguments |
| 139 | // -- r4 : constructor function |
| 140 | // -- lr : return address |
| 141 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero based) |
| 142 | // -- sp[argc * 4] : receiver |
| 143 | // ----------------------------------- |
| 144 | Counters* counters = masm->isolate()->counters(); |
| 145 | __ IncrementCounter(counters->string_ctor_calls(), 1, r5, r6); |
| 146 | |
| 147 | Register function = r4; |
| 148 | if (FLAG_debug_code) { |
| 149 | __ LoadGlobalFunction(Context::STRING_FUNCTION_INDEX, r5); |
| 150 | __ cmp(function, r5); |
| 151 | __ Assert(eq, kUnexpectedStringFunction); |
| 152 | } |
| 153 | |
| 154 | // Load the first arguments in r3 and get rid of the rest. |
| 155 | Label no_arguments; |
| 156 | __ cmpi(r3, Operand::Zero()); |
| 157 | __ beq(&no_arguments); |
| 158 | // First args = sp[(argc - 1) * 4]. |
| 159 | __ subi(r3, r3, Operand(1)); |
| 160 | __ ShiftLeftImm(r3, r3, Operand(kPointerSizeLog2)); |
| 161 | __ add(sp, sp, r3); |
| 162 | __ LoadP(r3, MemOperand(sp)); |
| 163 | // sp now point to args[0], drop args[0] + receiver. |
| 164 | __ Drop(2); |
| 165 | |
| 166 | Register argument = r5; |
| 167 | Label not_cached, argument_is_string; |
| 168 | __ LookupNumberStringCache(r3, // Input. |
| 169 | argument, // Result. |
| 170 | r6, // Scratch. |
| 171 | r7, // Scratch. |
| 172 | r8, // Scratch. |
| 173 | ¬_cached); |
| 174 | __ IncrementCounter(counters->string_ctor_cached_number(), 1, r6, r7); |
| 175 | __ bind(&argument_is_string); |
| 176 | |
| 177 | // ----------- S t a t e ------------- |
| 178 | // -- r5 : argument converted to string |
| 179 | // -- r4 : constructor function |
| 180 | // -- lr : return address |
| 181 | // ----------------------------------- |
| 182 | |
| 183 | Label gc_required; |
| 184 | __ Allocate(JSValue::kSize, |
| 185 | r3, // Result. |
| 186 | r6, // Scratch. |
| 187 | r7, // Scratch. |
| 188 | &gc_required, TAG_OBJECT); |
| 189 | |
| 190 | // Initialising the String Object. |
| 191 | Register map = r6; |
| 192 | __ LoadGlobalFunctionInitialMap(function, map, r7); |
| 193 | if (FLAG_debug_code) { |
| 194 | __ lbz(r7, FieldMemOperand(map, Map::kInstanceSizeOffset)); |
| 195 | __ cmpi(r7, Operand(JSValue::kSize >> kPointerSizeLog2)); |
| 196 | __ Assert(eq, kUnexpectedStringWrapperInstanceSize); |
| 197 | __ lbz(r7, FieldMemOperand(map, Map::kUnusedPropertyFieldsOffset)); |
| 198 | __ cmpi(r7, Operand::Zero()); |
| 199 | __ Assert(eq, kUnexpectedUnusedPropertiesOfStringWrapper); |
| 200 | } |
| 201 | __ StoreP(map, FieldMemOperand(r3, HeapObject::kMapOffset), r0); |
| 202 | |
| 203 | __ LoadRoot(r6, Heap::kEmptyFixedArrayRootIndex); |
| 204 | __ StoreP(r6, FieldMemOperand(r3, JSObject::kPropertiesOffset), r0); |
| 205 | __ StoreP(r6, FieldMemOperand(r3, JSObject::kElementsOffset), r0); |
| 206 | |
| 207 | __ StoreP(argument, FieldMemOperand(r3, JSValue::kValueOffset), r0); |
| 208 | |
| 209 | // Ensure the object is fully initialized. |
| 210 | STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize); |
| 211 | |
| 212 | __ Ret(); |
| 213 | |
| 214 | // The argument was not found in the number to string cache. Check |
| 215 | // if it's a string already before calling the conversion builtin. |
| 216 | Label convert_argument; |
| 217 | __ bind(¬_cached); |
| 218 | __ JumpIfSmi(r3, &convert_argument); |
| 219 | |
| 220 | // Is it a String? |
| 221 | __ LoadP(r5, FieldMemOperand(r3, HeapObject::kMapOffset)); |
| 222 | __ lbz(r6, FieldMemOperand(r5, Map::kInstanceTypeOffset)); |
| 223 | STATIC_ASSERT(kNotStringTag != 0); |
| 224 | __ andi(r0, r6, Operand(kIsNotStringMask)); |
| 225 | __ bne(&convert_argument, cr0); |
| 226 | __ mr(argument, r3); |
| 227 | __ IncrementCounter(counters->string_ctor_conversions(), 1, r6, r7); |
| 228 | __ b(&argument_is_string); |
| 229 | |
| 230 | // Invoke the conversion builtin and put the result into r5. |
| 231 | __ bind(&convert_argument); |
| 232 | __ push(function); // Preserve the function. |
| 233 | __ IncrementCounter(counters->string_ctor_conversions(), 1, r6, r7); |
| 234 | { |
| 235 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 236 | __ push(r3); |
| 237 | __ InvokeBuiltin(Builtins::TO_STRING, CALL_FUNCTION); |
| 238 | } |
| 239 | __ pop(function); |
| 240 | __ mr(argument, r3); |
| 241 | __ b(&argument_is_string); |
| 242 | |
| 243 | // Load the empty string into r5, remove the receiver from the |
| 244 | // stack, and jump back to the case where the argument is a string. |
| 245 | __ bind(&no_arguments); |
| 246 | __ LoadRoot(argument, Heap::kempty_stringRootIndex); |
| 247 | __ Drop(1); |
| 248 | __ b(&argument_is_string); |
| 249 | |
| 250 | // At this point the argument is already a string. Call runtime to |
| 251 | // create a string wrapper. |
| 252 | __ bind(&gc_required); |
| 253 | __ IncrementCounter(counters->string_ctor_gc_required(), 1, r6, r7); |
| 254 | { |
| 255 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 256 | __ push(argument); |
| 257 | __ CallRuntime(Runtime::kNewStringWrapper, 1); |
| 258 | } |
| 259 | __ Ret(); |
| 260 | } |
| 261 | |
| 262 | |
| 263 | static void CallRuntimePassFunction(MacroAssembler* masm, |
| 264 | Runtime::FunctionId function_id) { |
| 265 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 266 | // Push a copy of the function onto the stack. |
| 267 | // Push function as parameter to the runtime call. |
| 268 | __ Push(r4, r4); |
| 269 | |
| 270 | __ CallRuntime(function_id, 1); |
| 271 | // Restore reciever. |
| 272 | __ Pop(r4); |
| 273 | } |
| 274 | |
| 275 | |
| 276 | static void GenerateTailCallToSharedCode(MacroAssembler* masm) { |
| 277 | __ LoadP(ip, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset)); |
| 278 | __ LoadP(ip, FieldMemOperand(ip, SharedFunctionInfo::kCodeOffset)); |
| 279 | __ addi(ip, ip, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 280 | __ JumpToJSEntry(ip); |
| 281 | } |
| 282 | |
| 283 | |
| 284 | static void GenerateTailCallToReturnedCode(MacroAssembler* masm) { |
| 285 | __ addi(ip, r3, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 286 | __ JumpToJSEntry(ip); |
| 287 | } |
| 288 | |
| 289 | |
| 290 | void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) { |
| 291 | // Checking whether the queued function is ready for install is optional, |
| 292 | // since we come across interrupts and stack checks elsewhere. However, |
| 293 | // not checking may delay installing ready functions, and always checking |
| 294 | // would be quite expensive. A good compromise is to first check against |
| 295 | // stack limit as a cue for an interrupt signal. |
| 296 | Label ok; |
| 297 | __ LoadRoot(ip, Heap::kStackLimitRootIndex); |
| 298 | __ cmpl(sp, ip); |
| 299 | __ bge(&ok); |
| 300 | |
| 301 | CallRuntimePassFunction(masm, Runtime::kTryInstallOptimizedCode); |
| 302 | GenerateTailCallToReturnedCode(masm); |
| 303 | |
| 304 | __ bind(&ok); |
| 305 | GenerateTailCallToSharedCode(masm); |
| 306 | } |
| 307 | |
| 308 | |
| 309 | static void Generate_JSConstructStubHelper(MacroAssembler* masm, |
| 310 | bool is_api_function, |
| 311 | bool create_memento) { |
| 312 | // ----------- S t a t e ------------- |
| 313 | // -- r3 : number of arguments |
| 314 | // -- r4 : constructor function |
| 315 | // -- r5 : allocation site or undefined |
| 316 | // -- lr : return address |
| 317 | // -- sp[...]: constructor arguments |
| 318 | // ----------------------------------- |
| 319 | |
| 320 | // Should never create mementos for api functions. |
| 321 | DCHECK(!is_api_function || !create_memento); |
| 322 | |
| 323 | Isolate* isolate = masm->isolate(); |
| 324 | |
| 325 | // Enter a construct frame. |
| 326 | { |
| 327 | FrameAndConstantPoolScope scope(masm, StackFrame::CONSTRUCT); |
| 328 | |
| 329 | if (create_memento) { |
| 330 | __ AssertUndefinedOrAllocationSite(r5, r6); |
| 331 | __ push(r5); |
| 332 | } |
| 333 | |
| 334 | // Preserve the two incoming parameters on the stack. |
| 335 | __ SmiTag(r3); |
| 336 | __ push(r3); // Smi-tagged arguments count. |
| 337 | __ push(r4); // Constructor function. |
| 338 | |
| 339 | // Try to allocate the object without transitioning into C code. If any of |
| 340 | // the preconditions is not met, the code bails out to the runtime call. |
| 341 | Label rt_call, allocated; |
| 342 | if (FLAG_inline_new) { |
| 343 | Label undo_allocation; |
| 344 | ExternalReference debug_step_in_fp = |
| 345 | ExternalReference::debug_step_in_fp_address(isolate); |
| 346 | __ mov(r5, Operand(debug_step_in_fp)); |
| 347 | __ LoadP(r5, MemOperand(r5)); |
| 348 | __ cmpi(r5, Operand::Zero()); |
| 349 | __ bne(&rt_call); |
| 350 | |
| 351 | // Load the initial map and verify that it is in fact a map. |
| 352 | // r4: constructor function |
| 353 | __ LoadP(r5, |
| 354 | FieldMemOperand(r4, JSFunction::kPrototypeOrInitialMapOffset)); |
| 355 | __ JumpIfSmi(r5, &rt_call); |
| 356 | __ CompareObjectType(r5, r6, r7, MAP_TYPE); |
| 357 | __ bne(&rt_call); |
| 358 | |
| 359 | // Check that the constructor is not constructing a JSFunction (see |
| 360 | // comments in Runtime_NewObject in runtime.cc). In which case the |
| 361 | // initial map's instance type would be JS_FUNCTION_TYPE. |
| 362 | // r4: constructor function |
| 363 | // r5: initial map |
| 364 | __ CompareInstanceType(r5, r6, JS_FUNCTION_TYPE); |
| 365 | __ beq(&rt_call); |
| 366 | |
| 367 | if (!is_api_function) { |
| 368 | Label allocate; |
| 369 | MemOperand bit_field3 = FieldMemOperand(r5, Map::kBitField3Offset); |
| 370 | // Check if slack tracking is enabled. |
| 371 | __ lwz(r7, bit_field3); |
| 372 | __ DecodeField<Map::ConstructionCount>(r11, r7); |
| 373 | STATIC_ASSERT(JSFunction::kNoSlackTracking == 0); |
| 374 | __ cmpi(r11, Operand::Zero()); // JSFunction::kNoSlackTracking |
| 375 | __ beq(&allocate); |
| 376 | // Decrease generous allocation count. |
| 377 | __ Add(r7, r7, -(1 << Map::ConstructionCount::kShift), r0); |
| 378 | __ stw(r7, bit_field3); |
| 379 | __ cmpi(r11, Operand(JSFunction::kFinishSlackTracking)); |
| 380 | __ bne(&allocate); |
| 381 | |
| 382 | __ push(r4); |
| 383 | |
| 384 | __ Push(r5, r4); // r4 = constructor |
| 385 | __ CallRuntime(Runtime::kFinalizeInstanceSize, 1); |
| 386 | |
| 387 | __ Pop(r4, r5); |
| 388 | |
| 389 | __ bind(&allocate); |
| 390 | } |
| 391 | |
| 392 | // Now allocate the JSObject on the heap. |
| 393 | // r4: constructor function |
| 394 | // r5: initial map |
| 395 | __ lbz(r6, FieldMemOperand(r5, Map::kInstanceSizeOffset)); |
| 396 | if (create_memento) { |
| 397 | __ addi(r6, r6, Operand(AllocationMemento::kSize / kPointerSize)); |
| 398 | } |
| 399 | |
| 400 | __ Allocate(r6, r7, r8, r9, &rt_call, SIZE_IN_WORDS); |
| 401 | |
| 402 | // Allocated the JSObject, now initialize the fields. Map is set to |
| 403 | // initial map and properties and elements are set to empty fixed array. |
| 404 | // r4: constructor function |
| 405 | // r5: initial map |
| 406 | // r6: object size (not including memento if create_memento) |
| 407 | // r7: JSObject (not tagged) |
| 408 | __ LoadRoot(r9, Heap::kEmptyFixedArrayRootIndex); |
| 409 | __ mr(r8, r7); |
| 410 | __ StoreP(r5, MemOperand(r8, JSObject::kMapOffset)); |
| 411 | __ StoreP(r9, MemOperand(r8, JSObject::kPropertiesOffset)); |
| 412 | __ StoreP(r9, MemOperand(r8, JSObject::kElementsOffset)); |
| 413 | __ addi(r8, r8, Operand(JSObject::kElementsOffset + kPointerSize)); |
| 414 | |
| 415 | __ ShiftLeftImm(r9, r6, Operand(kPointerSizeLog2)); |
| 416 | __ add(r9, r7, r9); // End of object. |
| 417 | |
| 418 | // Fill all the in-object properties with the appropriate filler. |
| 419 | // r4: constructor function |
| 420 | // r5: initial map |
| 421 | // r6: object size (in words, including memento if create_memento) |
| 422 | // r7: JSObject (not tagged) |
| 423 | // r8: First in-object property of JSObject (not tagged) |
| 424 | // r9: End of object |
| 425 | DCHECK_EQ(3 * kPointerSize, JSObject::kHeaderSize); |
| 426 | __ LoadRoot(r10, Heap::kUndefinedValueRootIndex); |
| 427 | |
| 428 | if (!is_api_function) { |
| 429 | Label no_inobject_slack_tracking; |
| 430 | |
| 431 | // Check if slack tracking is enabled. |
| 432 | STATIC_ASSERT(JSFunction::kNoSlackTracking == 0); |
| 433 | __ cmpi(r11, Operand::Zero()); // JSFunction::kNoSlackTracking |
| 434 | __ beq(&no_inobject_slack_tracking); |
| 435 | |
| 436 | // Allocate object with a slack. |
| 437 | __ lbz(r3, FieldMemOperand(r5, Map::kPreAllocatedPropertyFieldsOffset)); |
| 438 | if (FLAG_debug_code) { |
| 439 | __ ShiftLeftImm(r0, r3, Operand(kPointerSizeLog2)); |
| 440 | __ add(r0, r8, r0); |
| 441 | // r0: offset of first field after pre-allocated fields |
| 442 | __ cmp(r0, r9); |
| 443 | __ Assert(le, kUnexpectedNumberOfPreAllocatedPropertyFields); |
| 444 | } |
| 445 | { |
| 446 | Label done; |
| 447 | __ cmpi(r3, Operand::Zero()); |
| 448 | __ beq(&done); |
| 449 | __ InitializeNFieldsWithFiller(r8, r3, r10); |
| 450 | __ bind(&done); |
| 451 | } |
| 452 | // To allow for truncation. |
| 453 | __ LoadRoot(r10, Heap::kOnePointerFillerMapRootIndex); |
| 454 | // Fill the remaining fields with one pointer filler map. |
| 455 | |
| 456 | __ bind(&no_inobject_slack_tracking); |
| 457 | } |
| 458 | |
| 459 | if (create_memento) { |
| 460 | __ subi(r3, r9, Operand(AllocationMemento::kSize)); |
| 461 | __ InitializeFieldsWithFiller(r8, r3, r10); |
| 462 | |
| 463 | // Fill in memento fields. |
| 464 | // r8: points to the allocated but uninitialized memento. |
| 465 | __ LoadRoot(r10, Heap::kAllocationMementoMapRootIndex); |
| 466 | __ StoreP(r10, MemOperand(r8, AllocationMemento::kMapOffset)); |
| 467 | // Load the AllocationSite |
| 468 | __ LoadP(r10, MemOperand(sp, 2 * kPointerSize)); |
| 469 | __ StoreP(r10, |
| 470 | MemOperand(r8, AllocationMemento::kAllocationSiteOffset)); |
| 471 | __ addi(r8, r8, Operand(AllocationMemento::kAllocationSiteOffset + |
| 472 | kPointerSize)); |
| 473 | } else { |
| 474 | __ InitializeFieldsWithFiller(r8, r9, r10); |
| 475 | } |
| 476 | |
| 477 | // Add the object tag to make the JSObject real, so that we can continue |
| 478 | // and jump into the continuation code at any time from now on. Any |
| 479 | // failures need to undo the allocation, so that the heap is in a |
| 480 | // consistent state and verifiable. |
| 481 | __ addi(r7, r7, Operand(kHeapObjectTag)); |
| 482 | |
| 483 | // Check if a non-empty properties array is needed. Continue with |
| 484 | // allocated object if not fall through to runtime call if it is. |
| 485 | // r4: constructor function |
| 486 | // r7: JSObject |
| 487 | // r8: start of next object (not tagged) |
| 488 | __ lbz(r6, FieldMemOperand(r5, Map::kUnusedPropertyFieldsOffset)); |
| 489 | // The field instance sizes contains both pre-allocated property fields |
| 490 | // and in-object properties. |
| 491 | __ lbz(r0, FieldMemOperand(r5, Map::kPreAllocatedPropertyFieldsOffset)); |
| 492 | __ add(r6, r6, r0); |
| 493 | __ lbz(r0, FieldMemOperand(r5, Map::kInObjectPropertiesOffset)); |
| 494 | __ sub(r6, r6, r0, LeaveOE, SetRC); |
| 495 | |
| 496 | // Done if no extra properties are to be allocated. |
| 497 | __ beq(&allocated, cr0); |
| 498 | __ Assert(ge, kPropertyAllocationCountFailed, cr0); |
| 499 | |
| 500 | // Scale the number of elements by pointer size and add the header for |
| 501 | // FixedArrays to the start of the next object calculation from above. |
| 502 | // r4: constructor |
| 503 | // r6: number of elements in properties array |
| 504 | // r7: JSObject |
| 505 | // r8: start of next object |
| 506 | __ addi(r3, r6, Operand(FixedArray::kHeaderSize / kPointerSize)); |
| 507 | __ Allocate( |
| 508 | r3, r8, r9, r5, &undo_allocation, |
| 509 | static_cast<AllocationFlags>(RESULT_CONTAINS_TOP | SIZE_IN_WORDS)); |
| 510 | |
| 511 | // Initialize the FixedArray. |
| 512 | // r4: constructor |
| 513 | // r6: number of elements in properties array |
| 514 | // r7: JSObject |
| 515 | // r8: FixedArray (not tagged) |
| 516 | __ LoadRoot(r9, Heap::kFixedArrayMapRootIndex); |
| 517 | __ mr(r5, r8); |
| 518 | DCHECK_EQ(0 * kPointerSize, JSObject::kMapOffset); |
| 519 | __ StoreP(r9, MemOperand(r5)); |
| 520 | DCHECK_EQ(1 * kPointerSize, FixedArray::kLengthOffset); |
| 521 | __ SmiTag(r3, r6); |
| 522 | __ StoreP(r3, MemOperand(r5, kPointerSize)); |
| 523 | __ addi(r5, r5, Operand(2 * kPointerSize)); |
| 524 | |
| 525 | // Initialize the fields to undefined. |
| 526 | // r4: constructor function |
| 527 | // r5: First element of FixedArray (not tagged) |
| 528 | // r6: number of elements in properties array |
| 529 | // r7: JSObject |
| 530 | // r8: FixedArray (not tagged) |
| 531 | DCHECK_EQ(2 * kPointerSize, FixedArray::kHeaderSize); |
| 532 | { |
| 533 | Label done; |
| 534 | __ cmpi(r6, Operand::Zero()); |
| 535 | __ beq(&done); |
| 536 | if (!is_api_function || create_memento) { |
| 537 | __ LoadRoot(r10, Heap::kUndefinedValueRootIndex); |
| 538 | } else if (FLAG_debug_code) { |
| 539 | __ LoadRoot(r11, Heap::kUndefinedValueRootIndex); |
| 540 | __ cmp(r10, r11); |
| 541 | __ Assert(eq, kUndefinedValueNotLoaded); |
| 542 | } |
| 543 | __ InitializeNFieldsWithFiller(r5, r6, r10); |
| 544 | __ bind(&done); |
| 545 | } |
| 546 | |
| 547 | // Store the initialized FixedArray into the properties field of |
| 548 | // the JSObject |
| 549 | // r4: constructor function |
| 550 | // r7: JSObject |
| 551 | // r8: FixedArray (not tagged) |
| 552 | __ addi(r8, r8, Operand(kHeapObjectTag)); // Add the heap tag. |
| 553 | __ StoreP(r8, FieldMemOperand(r7, JSObject::kPropertiesOffset), r0); |
| 554 | |
| 555 | // Continue with JSObject being successfully allocated |
| 556 | // r4: constructor function |
| 557 | // r7: JSObject |
| 558 | __ b(&allocated); |
| 559 | |
| 560 | // Undo the setting of the new top so that the heap is verifiable. For |
| 561 | // example, the map's unused properties potentially do not match the |
| 562 | // allocated objects unused properties. |
| 563 | // r7: JSObject (previous new top) |
| 564 | __ bind(&undo_allocation); |
| 565 | __ UndoAllocationInNewSpace(r7, r8); |
| 566 | } |
| 567 | |
| 568 | // Allocate the new receiver object using the runtime call. |
| 569 | // r4: constructor function |
| 570 | __ bind(&rt_call); |
| 571 | if (create_memento) { |
| 572 | // Get the cell or allocation site. |
| 573 | __ LoadP(r5, MemOperand(sp, 2 * kPointerSize)); |
| 574 | __ push(r5); |
| 575 | } |
| 576 | |
| 577 | __ push(r4); // argument for Runtime_NewObject |
| 578 | if (create_memento) { |
| 579 | __ CallRuntime(Runtime::kNewObjectWithAllocationSite, 2); |
| 580 | } else { |
| 581 | __ CallRuntime(Runtime::kNewObject, 1); |
| 582 | } |
| 583 | __ mr(r7, r3); |
| 584 | |
| 585 | // If we ended up using the runtime, and we want a memento, then the |
| 586 | // runtime call made it for us, and we shouldn't do create count |
| 587 | // increment. |
| 588 | Label count_incremented; |
| 589 | if (create_memento) { |
| 590 | __ b(&count_incremented); |
| 591 | } |
| 592 | |
| 593 | // Receiver for constructor call allocated. |
| 594 | // r7: JSObject |
| 595 | __ bind(&allocated); |
| 596 | |
| 597 | if (create_memento) { |
| 598 | __ LoadP(r5, MemOperand(sp, kPointerSize * 2)); |
| 599 | __ LoadRoot(r8, Heap::kUndefinedValueRootIndex); |
| 600 | __ cmp(r5, r8); |
| 601 | __ beq(&count_incremented); |
| 602 | // r5 is an AllocationSite. We are creating a memento from it, so we |
| 603 | // need to increment the memento create count. |
| 604 | __ LoadP( |
| 605 | r6, FieldMemOperand(r5, AllocationSite::kPretenureCreateCountOffset)); |
| 606 | __ AddSmiLiteral(r6, r6, Smi::FromInt(1), r0); |
| 607 | __ StoreP( |
| 608 | r6, FieldMemOperand(r5, AllocationSite::kPretenureCreateCountOffset), |
| 609 | r0); |
| 610 | __ bind(&count_incremented); |
| 611 | } |
| 612 | |
| 613 | __ Push(r7, r7); |
| 614 | |
| 615 | // Reload the number of arguments and the constructor from the stack. |
| 616 | // sp[0]: receiver |
| 617 | // sp[1]: receiver |
| 618 | // sp[2]: constructor function |
| 619 | // sp[3]: number of arguments (smi-tagged) |
| 620 | __ LoadP(r4, MemOperand(sp, 2 * kPointerSize)); |
| 621 | __ LoadP(r6, MemOperand(sp, 3 * kPointerSize)); |
| 622 | |
| 623 | // Set up pointer to last argument. |
| 624 | __ addi(r5, fp, Operand(StandardFrameConstants::kCallerSPOffset)); |
| 625 | |
| 626 | // Set up number of arguments for function call below |
| 627 | __ SmiUntag(r3, r6); |
| 628 | |
| 629 | // Copy arguments and receiver to the expression stack. |
| 630 | // r3: number of arguments |
| 631 | // r4: constructor function |
| 632 | // r5: address of last argument (caller sp) |
| 633 | // r6: number of arguments (smi-tagged) |
| 634 | // sp[0]: receiver |
| 635 | // sp[1]: receiver |
| 636 | // sp[2]: constructor function |
| 637 | // sp[3]: number of arguments (smi-tagged) |
| 638 | Label loop, no_args; |
| 639 | __ cmpi(r3, Operand::Zero()); |
| 640 | __ beq(&no_args); |
| 641 | __ ShiftLeftImm(ip, r3, Operand(kPointerSizeLog2)); |
| 642 | __ mtctr(r3); |
| 643 | __ bind(&loop); |
| 644 | __ subi(ip, ip, Operand(kPointerSize)); |
| 645 | __ LoadPX(r0, MemOperand(r5, ip)); |
| 646 | __ push(r0); |
| 647 | __ bdnz(&loop); |
| 648 | __ bind(&no_args); |
| 649 | |
| 650 | // Call the function. |
| 651 | // r3: number of arguments |
| 652 | // r4: constructor function |
| 653 | if (is_api_function) { |
| 654 | __ LoadP(cp, FieldMemOperand(r4, JSFunction::kContextOffset)); |
| 655 | Handle<Code> code = masm->isolate()->builtins()->HandleApiCallConstruct(); |
| 656 | __ Call(code, RelocInfo::CODE_TARGET); |
| 657 | } else { |
| 658 | ParameterCount actual(r3); |
| 659 | __ InvokeFunction(r4, actual, CALL_FUNCTION, NullCallWrapper()); |
| 660 | } |
| 661 | |
| 662 | // Store offset of return address for deoptimizer. |
| 663 | if (!is_api_function) { |
| 664 | masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset()); |
| 665 | } |
| 666 | |
| 667 | // Restore context from the frame. |
| 668 | // r3: result |
| 669 | // sp[0]: receiver |
| 670 | // sp[1]: constructor function |
| 671 | // sp[2]: number of arguments (smi-tagged) |
| 672 | __ LoadP(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 673 | |
| 674 | // If the result is an object (in the ECMA sense), we should get rid |
| 675 | // of the receiver and use the result; see ECMA-262 section 13.2.2-7 |
| 676 | // on page 74. |
| 677 | Label use_receiver, exit; |
| 678 | |
| 679 | // If the result is a smi, it is *not* an object in the ECMA sense. |
| 680 | // r3: result |
| 681 | // sp[0]: receiver (newly allocated object) |
| 682 | // sp[1]: constructor function |
| 683 | // sp[2]: number of arguments (smi-tagged) |
| 684 | __ JumpIfSmi(r3, &use_receiver); |
| 685 | |
| 686 | // If the type of the result (stored in its map) is less than |
| 687 | // FIRST_SPEC_OBJECT_TYPE, it is not an object in the ECMA sense. |
| 688 | __ CompareObjectType(r3, r4, r6, FIRST_SPEC_OBJECT_TYPE); |
| 689 | __ bge(&exit); |
| 690 | |
| 691 | // Throw away the result of the constructor invocation and use the |
| 692 | // on-stack receiver as the result. |
| 693 | __ bind(&use_receiver); |
| 694 | __ LoadP(r3, MemOperand(sp)); |
| 695 | |
| 696 | // Remove receiver from the stack, remove caller arguments, and |
| 697 | // return. |
| 698 | __ bind(&exit); |
| 699 | // r3: result |
| 700 | // sp[0]: receiver (newly allocated object) |
| 701 | // sp[1]: constructor function |
| 702 | // sp[2]: number of arguments (smi-tagged) |
| 703 | __ LoadP(r4, MemOperand(sp, 2 * kPointerSize)); |
| 704 | |
| 705 | // Leave construct frame. |
| 706 | } |
| 707 | |
| 708 | __ SmiToPtrArrayOffset(r4, r4); |
| 709 | __ add(sp, sp, r4); |
| 710 | __ addi(sp, sp, Operand(kPointerSize)); |
| 711 | __ IncrementCounter(isolate->counters()->constructed_objects(), 1, r4, r5); |
| 712 | __ blr(); |
| 713 | } |
| 714 | |
| 715 | |
| 716 | void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) { |
| 717 | Generate_JSConstructStubHelper(masm, false, FLAG_pretenuring_call_new); |
| 718 | } |
| 719 | |
| 720 | |
| 721 | void Builtins::Generate_JSConstructStubApi(MacroAssembler* masm) { |
| 722 | Generate_JSConstructStubHelper(masm, true, false); |
| 723 | } |
| 724 | |
| 725 | |
| 726 | static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm, |
| 727 | bool is_construct) { |
| 728 | // Called from Generate_JS_Entry |
| 729 | // r3: code entry |
| 730 | // r4: function |
| 731 | // r5: receiver |
| 732 | // r6: argc |
| 733 | // r7: argv |
| 734 | // r0,r8-r9, cp may be clobbered |
| 735 | ProfileEntryHookStub::MaybeCallEntryHook(masm); |
| 736 | |
| 737 | // Clear the context before we push it when entering the internal frame. |
| 738 | __ li(cp, Operand::Zero()); |
| 739 | |
| 740 | // Enter an internal frame. |
| 741 | { |
| 742 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 743 | |
| 744 | // Set up the context from the function argument. |
| 745 | __ LoadP(cp, FieldMemOperand(r4, JSFunction::kContextOffset)); |
| 746 | |
| 747 | __ InitializeRootRegister(); |
| 748 | |
| 749 | // Push the function and the receiver onto the stack. |
| 750 | __ push(r4); |
| 751 | __ push(r5); |
| 752 | |
| 753 | // Copy arguments to the stack in a loop. |
| 754 | // r4: function |
| 755 | // r6: argc |
| 756 | // r7: argv, i.e. points to first arg |
| 757 | Label loop, entry; |
| 758 | __ ShiftLeftImm(r0, r6, Operand(kPointerSizeLog2)); |
| 759 | __ add(r5, r7, r0); |
| 760 | // r5 points past last arg. |
| 761 | __ b(&entry); |
| 762 | __ bind(&loop); |
| 763 | __ LoadP(r8, MemOperand(r7)); // read next parameter |
| 764 | __ addi(r7, r7, Operand(kPointerSize)); |
| 765 | __ LoadP(r0, MemOperand(r8)); // dereference handle |
| 766 | __ push(r0); // push parameter |
| 767 | __ bind(&entry); |
| 768 | __ cmp(r7, r5); |
| 769 | __ bne(&loop); |
| 770 | |
| 771 | // Initialize all JavaScript callee-saved registers, since they will be seen |
| 772 | // by the garbage collector as part of handlers. |
| 773 | __ LoadRoot(r7, Heap::kUndefinedValueRootIndex); |
| 774 | __ mr(r14, r7); |
| 775 | __ mr(r15, r7); |
| 776 | __ mr(r16, r7); |
| 777 | __ mr(r17, r7); |
| 778 | |
| 779 | // Invoke the code and pass argc as r3. |
| 780 | __ mr(r3, r6); |
| 781 | if (is_construct) { |
| 782 | // No type feedback cell is available |
| 783 | __ LoadRoot(r5, Heap::kUndefinedValueRootIndex); |
| 784 | CallConstructStub stub(masm->isolate(), NO_CALL_CONSTRUCTOR_FLAGS); |
| 785 | __ CallStub(&stub); |
| 786 | } else { |
| 787 | ParameterCount actual(r3); |
| 788 | __ InvokeFunction(r4, actual, CALL_FUNCTION, NullCallWrapper()); |
| 789 | } |
| 790 | // Exit the JS frame and remove the parameters (except function), and |
| 791 | // return. |
| 792 | } |
| 793 | __ blr(); |
| 794 | |
| 795 | // r3: result |
| 796 | } |
| 797 | |
| 798 | |
| 799 | void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) { |
| 800 | Generate_JSEntryTrampolineHelper(masm, false); |
| 801 | } |
| 802 | |
| 803 | |
| 804 | void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) { |
| 805 | Generate_JSEntryTrampolineHelper(masm, true); |
| 806 | } |
| 807 | |
| 808 | |
| 809 | void Builtins::Generate_CompileLazy(MacroAssembler* masm) { |
| 810 | CallRuntimePassFunction(masm, Runtime::kCompileLazy); |
| 811 | GenerateTailCallToReturnedCode(masm); |
| 812 | } |
| 813 | |
| 814 | |
| 815 | static void CallCompileOptimized(MacroAssembler* masm, bool concurrent) { |
| 816 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 817 | // Push a copy of the function onto the stack. |
| 818 | // Push function as parameter to the runtime call. |
| 819 | __ Push(r4, r4); |
| 820 | // Whether to compile in a background thread. |
| 821 | __ Push(masm->isolate()->factory()->ToBoolean(concurrent)); |
| 822 | |
| 823 | __ CallRuntime(Runtime::kCompileOptimized, 2); |
| 824 | // Restore receiver. |
| 825 | __ pop(r4); |
| 826 | } |
| 827 | |
| 828 | |
| 829 | void Builtins::Generate_CompileOptimized(MacroAssembler* masm) { |
| 830 | CallCompileOptimized(masm, false); |
| 831 | GenerateTailCallToReturnedCode(masm); |
| 832 | } |
| 833 | |
| 834 | |
| 835 | void Builtins::Generate_CompileOptimizedConcurrent(MacroAssembler* masm) { |
| 836 | CallCompileOptimized(masm, true); |
| 837 | GenerateTailCallToReturnedCode(masm); |
| 838 | } |
| 839 | |
| 840 | |
| 841 | static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) { |
| 842 | // For now, we are relying on the fact that make_code_young doesn't do any |
| 843 | // garbage collection which allows us to save/restore the registers without |
| 844 | // worrying about which of them contain pointers. We also don't build an |
| 845 | // internal frame to make the code faster, since we shouldn't have to do stack |
| 846 | // crawls in MakeCodeYoung. This seems a bit fragile. |
| 847 | |
| 848 | // Point r3 at the start of the PlatformCodeAge sequence. |
| 849 | __ mr(r3, ip); |
| 850 | |
| 851 | // The following registers must be saved and restored when calling through to |
| 852 | // the runtime: |
| 853 | // r3 - contains return address (beginning of patch sequence) |
| 854 | // r4 - isolate |
| 855 | // lr - return address |
| 856 | FrameScope scope(masm, StackFrame::MANUAL); |
| 857 | __ mflr(r0); |
| 858 | __ MultiPush(r0.bit() | r3.bit() | r4.bit() | fp.bit()); |
| 859 | __ PrepareCallCFunction(2, 0, r5); |
| 860 | __ mov(r4, Operand(ExternalReference::isolate_address(masm->isolate()))); |
| 861 | __ CallCFunction( |
| 862 | ExternalReference::get_make_code_young_function(masm->isolate()), 2); |
| 863 | __ MultiPop(r0.bit() | r3.bit() | r4.bit() | fp.bit()); |
| 864 | __ mtlr(r0); |
| 865 | __ mr(ip, r3); |
| 866 | __ Jump(ip); |
| 867 | } |
| 868 | |
| 869 | #define DEFINE_CODE_AGE_BUILTIN_GENERATOR(C) \ |
| 870 | void Builtins::Generate_Make##C##CodeYoungAgainEvenMarking( \ |
| 871 | MacroAssembler* masm) { \ |
| 872 | GenerateMakeCodeYoungAgainCommon(masm); \ |
| 873 | } \ |
| 874 | void Builtins::Generate_Make##C##CodeYoungAgainOddMarking( \ |
| 875 | MacroAssembler* masm) { \ |
| 876 | GenerateMakeCodeYoungAgainCommon(masm); \ |
| 877 | } |
| 878 | CODE_AGE_LIST(DEFINE_CODE_AGE_BUILTIN_GENERATOR) |
| 879 | #undef DEFINE_CODE_AGE_BUILTIN_GENERATOR |
| 880 | |
| 881 | |
| 882 | void Builtins::Generate_MarkCodeAsExecutedOnce(MacroAssembler* masm) { |
| 883 | // For now, we are relying on the fact that make_code_young doesn't do any |
| 884 | // garbage collection which allows us to save/restore the registers without |
| 885 | // worrying about which of them contain pointers. We also don't build an |
| 886 | // internal frame to make the code faster, since we shouldn't have to do stack |
| 887 | // crawls in MakeCodeYoung. This seems a bit fragile. |
| 888 | |
| 889 | // Point r3 at the start of the PlatformCodeAge sequence. |
| 890 | __ mr(r3, ip); |
| 891 | |
| 892 | // The following registers must be saved and restored when calling through to |
| 893 | // the runtime: |
| 894 | // r3 - contains return address (beginning of patch sequence) |
| 895 | // r4 - isolate |
| 896 | // lr - return address |
| 897 | FrameScope scope(masm, StackFrame::MANUAL); |
| 898 | __ mflr(r0); |
| 899 | __ MultiPush(r0.bit() | r3.bit() | r4.bit() | fp.bit()); |
| 900 | __ PrepareCallCFunction(2, 0, r5); |
| 901 | __ mov(r4, Operand(ExternalReference::isolate_address(masm->isolate()))); |
| 902 | __ CallCFunction( |
| 903 | ExternalReference::get_mark_code_as_executed_function(masm->isolate()), |
| 904 | 2); |
| 905 | __ MultiPop(r0.bit() | r3.bit() | r4.bit() | fp.bit()); |
| 906 | __ mtlr(r0); |
| 907 | __ mr(ip, r3); |
| 908 | |
| 909 | // Perform prologue operations usually performed by the young code stub. |
| 910 | __ PushFixedFrame(r4); |
| 911 | __ addi(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
| 912 | |
| 913 | // Jump to point after the code-age stub. |
| 914 | __ addi(r3, ip, Operand(kNoCodeAgeSequenceLength)); |
| 915 | __ Jump(r3); |
| 916 | } |
| 917 | |
| 918 | |
| 919 | void Builtins::Generate_MarkCodeAsExecutedTwice(MacroAssembler* masm) { |
| 920 | GenerateMakeCodeYoungAgainCommon(masm); |
| 921 | } |
| 922 | |
| 923 | |
| 924 | static void Generate_NotifyStubFailureHelper(MacroAssembler* masm, |
| 925 | SaveFPRegsMode save_doubles) { |
| 926 | { |
| 927 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 928 | |
| 929 | // Preserve registers across notification, this is important for compiled |
| 930 | // stubs that tail call the runtime on deopts passing their parameters in |
| 931 | // registers. |
| 932 | __ MultiPush(kJSCallerSaved | kCalleeSaved); |
| 933 | // Pass the function and deoptimization type to the runtime system. |
| 934 | __ CallRuntime(Runtime::kNotifyStubFailure, 0, save_doubles); |
| 935 | __ MultiPop(kJSCallerSaved | kCalleeSaved); |
| 936 | } |
| 937 | |
| 938 | __ addi(sp, sp, Operand(kPointerSize)); // Ignore state |
| 939 | __ blr(); // Jump to miss handler |
| 940 | } |
| 941 | |
| 942 | |
| 943 | void Builtins::Generate_NotifyStubFailure(MacroAssembler* masm) { |
| 944 | Generate_NotifyStubFailureHelper(masm, kDontSaveFPRegs); |
| 945 | } |
| 946 | |
| 947 | |
| 948 | void Builtins::Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm) { |
| 949 | Generate_NotifyStubFailureHelper(masm, kSaveFPRegs); |
| 950 | } |
| 951 | |
| 952 | |
| 953 | static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm, |
| 954 | Deoptimizer::BailoutType type) { |
| 955 | { |
| 956 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 957 | // Pass the function and deoptimization type to the runtime system. |
| 958 | __ LoadSmiLiteral(r3, Smi::FromInt(static_cast<int>(type))); |
| 959 | __ push(r3); |
| 960 | __ CallRuntime(Runtime::kNotifyDeoptimized, 1); |
| 961 | } |
| 962 | |
| 963 | // Get the full codegen state from the stack and untag it -> r9. |
| 964 | __ LoadP(r9, MemOperand(sp, 0 * kPointerSize)); |
| 965 | __ SmiUntag(r9); |
| 966 | // Switch on the state. |
| 967 | Label with_tos_register, unknown_state; |
| 968 | __ cmpi(r9, Operand(FullCodeGenerator::NO_REGISTERS)); |
| 969 | __ bne(&with_tos_register); |
| 970 | __ addi(sp, sp, Operand(1 * kPointerSize)); // Remove state. |
| 971 | __ Ret(); |
| 972 | |
| 973 | __ bind(&with_tos_register); |
| 974 | __ LoadP(r3, MemOperand(sp, 1 * kPointerSize)); |
| 975 | __ cmpi(r9, Operand(FullCodeGenerator::TOS_REG)); |
| 976 | __ bne(&unknown_state); |
| 977 | __ addi(sp, sp, Operand(2 * kPointerSize)); // Remove state. |
| 978 | __ Ret(); |
| 979 | |
| 980 | __ bind(&unknown_state); |
| 981 | __ stop("no cases left"); |
| 982 | } |
| 983 | |
| 984 | |
| 985 | void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) { |
| 986 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); |
| 987 | } |
| 988 | |
| 989 | |
| 990 | void Builtins::Generate_NotifySoftDeoptimized(MacroAssembler* masm) { |
| 991 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::SOFT); |
| 992 | } |
| 993 | |
| 994 | |
| 995 | void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) { |
| 996 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::LAZY); |
| 997 | } |
| 998 | |
| 999 | |
| 1000 | void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) { |
| 1001 | // Lookup the function in the JavaScript frame. |
| 1002 | __ LoadP(r3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1003 | { |
| 1004 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 1005 | // Pass function as argument. |
| 1006 | __ push(r3); |
| 1007 | __ CallRuntime(Runtime::kCompileForOnStackReplacement, 1); |
| 1008 | } |
| 1009 | |
| 1010 | // If the code object is null, just return to the unoptimized code. |
| 1011 | Label skip; |
| 1012 | __ CmpSmiLiteral(r3, Smi::FromInt(0), r0); |
| 1013 | __ bne(&skip); |
| 1014 | __ Ret(); |
| 1015 | |
| 1016 | __ bind(&skip); |
| 1017 | |
| 1018 | // Load deoptimization data from the code object. |
| 1019 | // <deopt_data> = <code>[#deoptimization_data_offset] |
| 1020 | __ LoadP(r4, FieldMemOperand(r3, Code::kDeoptimizationDataOffset)); |
| 1021 | |
| 1022 | #if V8_OOL_CONSTANT_POOL |
| 1023 | { |
| 1024 | ConstantPoolUnavailableScope constant_pool_unavailable(masm); |
| 1025 | __ LoadP(kConstantPoolRegister, |
| 1026 | FieldMemOperand(r3, Code::kConstantPoolOffset)); |
| 1027 | #endif |
| 1028 | |
| 1029 | // Load the OSR entrypoint offset from the deoptimization data. |
| 1030 | // <osr_offset> = <deopt_data>[#header_size + #osr_pc_offset] |
| 1031 | __ LoadP(r4, FieldMemOperand( |
| 1032 | r4, FixedArray::OffsetOfElementAt( |
| 1033 | DeoptimizationInputData::kOsrPcOffsetIndex))); |
| 1034 | __ SmiUntag(r4); |
| 1035 | |
| 1036 | // Compute the target address = code_obj + header_size + osr_offset |
| 1037 | // <entry_addr> = <code_obj> + #header_size + <osr_offset> |
| 1038 | __ add(r3, r3, r4); |
| 1039 | __ addi(r0, r3, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 1040 | __ mtlr(r0); |
| 1041 | |
| 1042 | // And "return" to the OSR entry point of the function. |
| 1043 | __ Ret(); |
| 1044 | #if V8_OOL_CONSTANT_POOL |
| 1045 | } |
| 1046 | #endif |
| 1047 | } |
| 1048 | |
| 1049 | |
| 1050 | void Builtins::Generate_OsrAfterStackCheck(MacroAssembler* masm) { |
| 1051 | // We check the stack limit as indicator that recompilation might be done. |
| 1052 | Label ok; |
| 1053 | __ LoadRoot(ip, Heap::kStackLimitRootIndex); |
| 1054 | __ cmpl(sp, ip); |
| 1055 | __ bge(&ok); |
| 1056 | { |
| 1057 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 1058 | __ CallRuntime(Runtime::kStackGuard, 0); |
| 1059 | } |
| 1060 | __ Jump(masm->isolate()->builtins()->OnStackReplacement(), |
| 1061 | RelocInfo::CODE_TARGET); |
| 1062 | |
| 1063 | __ bind(&ok); |
| 1064 | __ Ret(); |
| 1065 | } |
| 1066 | |
| 1067 | |
| 1068 | void Builtins::Generate_FunctionCall(MacroAssembler* masm) { |
| 1069 | // 1. Make sure we have at least one argument. |
| 1070 | // r3: actual number of arguments |
| 1071 | { |
| 1072 | Label done; |
| 1073 | __ cmpi(r3, Operand::Zero()); |
| 1074 | __ bne(&done); |
| 1075 | __ LoadRoot(r5, Heap::kUndefinedValueRootIndex); |
| 1076 | __ push(r5); |
| 1077 | __ addi(r3, r3, Operand(1)); |
| 1078 | __ bind(&done); |
| 1079 | } |
| 1080 | |
| 1081 | // 2. Get the function to call (passed as receiver) from the stack, check |
| 1082 | // if it is a function. |
| 1083 | // r3: actual number of arguments |
| 1084 | Label slow, non_function; |
| 1085 | __ ShiftLeftImm(r4, r3, Operand(kPointerSizeLog2)); |
| 1086 | __ add(r4, sp, r4); |
| 1087 | __ LoadP(r4, MemOperand(r4)); |
| 1088 | __ JumpIfSmi(r4, &non_function); |
| 1089 | __ CompareObjectType(r4, r5, r5, JS_FUNCTION_TYPE); |
| 1090 | __ bne(&slow); |
| 1091 | |
| 1092 | // 3a. Patch the first argument if necessary when calling a function. |
| 1093 | // r3: actual number of arguments |
| 1094 | // r4: function |
| 1095 | Label shift_arguments; |
| 1096 | __ li(r7, Operand::Zero()); // indicate regular JS_FUNCTION |
| 1097 | { |
| 1098 | Label convert_to_object, use_global_proxy, patch_receiver; |
| 1099 | // Change context eagerly in case we need the global receiver. |
| 1100 | __ LoadP(cp, FieldMemOperand(r4, JSFunction::kContextOffset)); |
| 1101 | |
| 1102 | // Do not transform the receiver for strict mode functions. |
| 1103 | __ LoadP(r5, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset)); |
| 1104 | __ lwz(r6, FieldMemOperand(r5, SharedFunctionInfo::kCompilerHintsOffset)); |
| 1105 | __ TestBit(r6, |
| 1106 | #if V8_TARGET_ARCH_PPC64 |
| 1107 | SharedFunctionInfo::kStrictModeFunction, |
| 1108 | #else |
| 1109 | SharedFunctionInfo::kStrictModeFunction + kSmiTagSize, |
| 1110 | #endif |
| 1111 | r0); |
| 1112 | __ bne(&shift_arguments, cr0); |
| 1113 | |
| 1114 | // Do not transform the receiver for native (Compilerhints already in r6). |
| 1115 | __ TestBit(r6, |
| 1116 | #if V8_TARGET_ARCH_PPC64 |
| 1117 | SharedFunctionInfo::kNative, |
| 1118 | #else |
| 1119 | SharedFunctionInfo::kNative + kSmiTagSize, |
| 1120 | #endif |
| 1121 | r0); |
| 1122 | __ bne(&shift_arguments, cr0); |
| 1123 | |
| 1124 | // Compute the receiver in sloppy mode. |
| 1125 | __ ShiftLeftImm(ip, r3, Operand(kPointerSizeLog2)); |
| 1126 | __ add(r5, sp, ip); |
| 1127 | __ LoadP(r5, MemOperand(r5, -kPointerSize)); |
| 1128 | // r3: actual number of arguments |
| 1129 | // r4: function |
| 1130 | // r5: first argument |
| 1131 | __ JumpIfSmi(r5, &convert_to_object); |
| 1132 | |
| 1133 | __ LoadRoot(r6, Heap::kUndefinedValueRootIndex); |
| 1134 | __ cmp(r5, r6); |
| 1135 | __ beq(&use_global_proxy); |
| 1136 | __ LoadRoot(r6, Heap::kNullValueRootIndex); |
| 1137 | __ cmp(r5, r6); |
| 1138 | __ beq(&use_global_proxy); |
| 1139 | |
| 1140 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 1141 | __ CompareObjectType(r5, r6, r6, FIRST_SPEC_OBJECT_TYPE); |
| 1142 | __ bge(&shift_arguments); |
| 1143 | |
| 1144 | __ bind(&convert_to_object); |
| 1145 | |
| 1146 | { |
| 1147 | // Enter an internal frame in order to preserve argument count. |
| 1148 | FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL); |
| 1149 | __ SmiTag(r3); |
| 1150 | __ Push(r3, r5); |
| 1151 | __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); |
| 1152 | __ mr(r5, r3); |
| 1153 | |
| 1154 | __ pop(r3); |
| 1155 | __ SmiUntag(r3); |
| 1156 | |
| 1157 | // Exit the internal frame. |
| 1158 | } |
| 1159 | |
| 1160 | // Restore the function to r4, and the flag to r7. |
| 1161 | __ ShiftLeftImm(r7, r3, Operand(kPointerSizeLog2)); |
| 1162 | __ add(r7, sp, r7); |
| 1163 | __ LoadP(r4, MemOperand(r7)); |
| 1164 | __ li(r7, Operand::Zero()); |
| 1165 | __ b(&patch_receiver); |
| 1166 | |
| 1167 | __ bind(&use_global_proxy); |
| 1168 | __ LoadP(r5, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX)); |
| 1169 | __ LoadP(r5, FieldMemOperand(r5, GlobalObject::kGlobalProxyOffset)); |
| 1170 | |
| 1171 | __ bind(&patch_receiver); |
| 1172 | __ ShiftLeftImm(ip, r3, Operand(kPointerSizeLog2)); |
| 1173 | __ add(r6, sp, ip); |
| 1174 | __ StoreP(r5, MemOperand(r6, -kPointerSize)); |
| 1175 | |
| 1176 | __ b(&shift_arguments); |
| 1177 | } |
| 1178 | |
| 1179 | // 3b. Check for function proxy. |
| 1180 | __ bind(&slow); |
| 1181 | __ li(r7, Operand(1, RelocInfo::NONE32)); // indicate function proxy |
| 1182 | __ cmpi(r5, Operand(JS_FUNCTION_PROXY_TYPE)); |
| 1183 | __ beq(&shift_arguments); |
| 1184 | __ bind(&non_function); |
| 1185 | __ li(r7, Operand(2, RelocInfo::NONE32)); // indicate non-function |
| 1186 | |
| 1187 | // 3c. Patch the first argument when calling a non-function. The |
| 1188 | // CALL_NON_FUNCTION builtin expects the non-function callee as |
| 1189 | // receiver, so overwrite the first argument which will ultimately |
| 1190 | // become the receiver. |
| 1191 | // r3: actual number of arguments |
| 1192 | // r4: function |
| 1193 | // r7: call type (0: JS function, 1: function proxy, 2: non-function) |
| 1194 | __ ShiftLeftImm(ip, r3, Operand(kPointerSizeLog2)); |
| 1195 | __ add(r5, sp, ip); |
| 1196 | __ StoreP(r4, MemOperand(r5, -kPointerSize)); |
| 1197 | |
| 1198 | // 4. Shift arguments and return address one slot down on the stack |
| 1199 | // (overwriting the original receiver). Adjust argument count to make |
| 1200 | // the original first argument the new receiver. |
| 1201 | // r3: actual number of arguments |
| 1202 | // r4: function |
| 1203 | // r7: call type (0: JS function, 1: function proxy, 2: non-function) |
| 1204 | __ bind(&shift_arguments); |
| 1205 | { |
| 1206 | Label loop; |
| 1207 | // Calculate the copy start address (destination). Copy end address is sp. |
| 1208 | __ ShiftLeftImm(ip, r3, Operand(kPointerSizeLog2)); |
| 1209 | __ add(r5, sp, ip); |
| 1210 | |
| 1211 | __ bind(&loop); |
| 1212 | __ LoadP(ip, MemOperand(r5, -kPointerSize)); |
| 1213 | __ StoreP(ip, MemOperand(r5)); |
| 1214 | __ subi(r5, r5, Operand(kPointerSize)); |
| 1215 | __ cmp(r5, sp); |
| 1216 | __ bne(&loop); |
| 1217 | // Adjust the actual number of arguments and remove the top element |
| 1218 | // (which is a copy of the last argument). |
| 1219 | __ subi(r3, r3, Operand(1)); |
| 1220 | __ pop(); |
| 1221 | } |
| 1222 | |
| 1223 | // 5a. Call non-function via tail call to CALL_NON_FUNCTION builtin, |
| 1224 | // or a function proxy via CALL_FUNCTION_PROXY. |
| 1225 | // r3: actual number of arguments |
| 1226 | // r4: function |
| 1227 | // r7: call type (0: JS function, 1: function proxy, 2: non-function) |
| 1228 | { |
| 1229 | Label function, non_proxy; |
| 1230 | __ cmpi(r7, Operand::Zero()); |
| 1231 | __ beq(&function); |
| 1232 | // Expected number of arguments is 0 for CALL_NON_FUNCTION. |
| 1233 | __ li(r5, Operand::Zero()); |
| 1234 | __ cmpi(r7, Operand(1)); |
| 1235 | __ bne(&non_proxy); |
| 1236 | |
| 1237 | __ push(r4); // re-add proxy object as additional argument |
| 1238 | __ addi(r3, r3, Operand(1)); |
| 1239 | __ GetBuiltinFunction(r4, Builtins::CALL_FUNCTION_PROXY); |
| 1240 | __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
| 1241 | RelocInfo::CODE_TARGET); |
| 1242 | |
| 1243 | __ bind(&non_proxy); |
| 1244 | __ GetBuiltinFunction(r4, Builtins::CALL_NON_FUNCTION); |
| 1245 | __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
| 1246 | RelocInfo::CODE_TARGET); |
| 1247 | __ bind(&function); |
| 1248 | } |
| 1249 | |
| 1250 | // 5b. Get the code to call from the function and check that the number of |
| 1251 | // expected arguments matches what we're providing. If so, jump |
| 1252 | // (tail-call) to the code in register edx without checking arguments. |
| 1253 | // r3: actual number of arguments |
| 1254 | // r4: function |
| 1255 | __ LoadP(r6, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset)); |
| 1256 | __ LoadWordArith( |
| 1257 | r5, FieldMemOperand(r6, SharedFunctionInfo::kFormalParameterCountOffset)); |
| 1258 | #if !V8_TARGET_ARCH_PPC64 |
| 1259 | __ SmiUntag(r5); |
| 1260 | #endif |
| 1261 | __ cmp(r5, r3); // Check formal and actual parameter counts. |
| 1262 | __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
| 1263 | RelocInfo::CODE_TARGET, ne); |
| 1264 | |
| 1265 | __ LoadP(ip, FieldMemOperand(r4, JSFunction::kCodeEntryOffset)); |
| 1266 | ParameterCount expected(0); |
| 1267 | __ InvokeCode(ip, expected, expected, JUMP_FUNCTION, NullCallWrapper()); |
| 1268 | } |
| 1269 | |
| 1270 | |
| 1271 | void Builtins::Generate_FunctionApply(MacroAssembler* masm) { |
| 1272 | const int kIndexOffset = |
| 1273 | StandardFrameConstants::kExpressionsOffset - (2 * kPointerSize); |
| 1274 | const int kLimitOffset = |
| 1275 | StandardFrameConstants::kExpressionsOffset - (1 * kPointerSize); |
| 1276 | const int kArgsOffset = 2 * kPointerSize; |
| 1277 | const int kRecvOffset = 3 * kPointerSize; |
| 1278 | const int kFunctionOffset = 4 * kPointerSize; |
| 1279 | |
| 1280 | { |
| 1281 | FrameAndConstantPoolScope frame_scope(masm, StackFrame::INTERNAL); |
| 1282 | |
| 1283 | __ LoadP(r3, MemOperand(fp, kFunctionOffset)); // get the function |
| 1284 | __ push(r3); |
| 1285 | __ LoadP(r3, MemOperand(fp, kArgsOffset)); // get the args array |
| 1286 | __ push(r3); |
| 1287 | __ InvokeBuiltin(Builtins::APPLY_PREPARE, CALL_FUNCTION); |
| 1288 | |
| 1289 | // Check the stack for overflow. We are not trying to catch |
| 1290 | // interruptions (e.g. debug break and preemption) here, so the "real stack |
| 1291 | // limit" is checked. |
| 1292 | Label okay; |
| 1293 | __ LoadRoot(r5, Heap::kRealStackLimitRootIndex); |
| 1294 | // Make r5 the space we have left. The stack might already be overflowed |
| 1295 | // here which will cause r5 to become negative. |
| 1296 | __ sub(r5, sp, r5); |
| 1297 | // Check if the arguments will overflow the stack. |
| 1298 | __ SmiToPtrArrayOffset(r0, r3); |
| 1299 | __ cmp(r5, r0); |
| 1300 | __ bgt(&okay); // Signed comparison. |
| 1301 | |
| 1302 | // Out of stack space. |
| 1303 | __ LoadP(r4, MemOperand(fp, kFunctionOffset)); |
| 1304 | __ Push(r4, r3); |
| 1305 | __ InvokeBuiltin(Builtins::STACK_OVERFLOW, CALL_FUNCTION); |
| 1306 | // End of stack check. |
| 1307 | |
| 1308 | // Push current limit and index. |
| 1309 | __ bind(&okay); |
| 1310 | __ li(r4, Operand::Zero()); |
| 1311 | __ Push(r3, r4); // limit and initial index. |
| 1312 | |
| 1313 | // Get the receiver. |
| 1314 | __ LoadP(r3, MemOperand(fp, kRecvOffset)); |
| 1315 | |
| 1316 | // Check that the function is a JS function (otherwise it must be a proxy). |
| 1317 | Label push_receiver; |
| 1318 | __ LoadP(r4, MemOperand(fp, kFunctionOffset)); |
| 1319 | __ CompareObjectType(r4, r5, r5, JS_FUNCTION_TYPE); |
| 1320 | __ bne(&push_receiver); |
| 1321 | |
| 1322 | // Change context eagerly to get the right global object if necessary. |
| 1323 | __ LoadP(cp, FieldMemOperand(r4, JSFunction::kContextOffset)); |
| 1324 | // Load the shared function info while the function is still in r4. |
| 1325 | __ LoadP(r5, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset)); |
| 1326 | |
| 1327 | // Compute the receiver. |
| 1328 | // Do not transform the receiver for strict mode functions. |
| 1329 | Label call_to_object, use_global_proxy; |
| 1330 | __ lwz(r5, FieldMemOperand(r5, SharedFunctionInfo::kCompilerHintsOffset)); |
| 1331 | __ TestBit(r5, |
| 1332 | #if V8_TARGET_ARCH_PPC64 |
| 1333 | SharedFunctionInfo::kStrictModeFunction, |
| 1334 | #else |
| 1335 | SharedFunctionInfo::kStrictModeFunction + kSmiTagSize, |
| 1336 | #endif |
| 1337 | r0); |
| 1338 | __ bne(&push_receiver, cr0); |
| 1339 | |
| 1340 | // Do not transform the receiver for strict mode functions. |
| 1341 | __ TestBit(r5, |
| 1342 | #if V8_TARGET_ARCH_PPC64 |
| 1343 | SharedFunctionInfo::kNative, |
| 1344 | #else |
| 1345 | SharedFunctionInfo::kNative + kSmiTagSize, |
| 1346 | #endif |
| 1347 | r0); |
| 1348 | __ bne(&push_receiver, cr0); |
| 1349 | |
| 1350 | // Compute the receiver in sloppy mode. |
| 1351 | __ JumpIfSmi(r3, &call_to_object); |
| 1352 | __ LoadRoot(r4, Heap::kNullValueRootIndex); |
| 1353 | __ cmp(r3, r4); |
| 1354 | __ beq(&use_global_proxy); |
| 1355 | __ LoadRoot(r4, Heap::kUndefinedValueRootIndex); |
| 1356 | __ cmp(r3, r4); |
| 1357 | __ beq(&use_global_proxy); |
| 1358 | |
| 1359 | // Check if the receiver is already a JavaScript object. |
| 1360 | // r3: receiver |
| 1361 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 1362 | __ CompareObjectType(r3, r4, r4, FIRST_SPEC_OBJECT_TYPE); |
| 1363 | __ bge(&push_receiver); |
| 1364 | |
| 1365 | // Convert the receiver to a regular object. |
| 1366 | // r3: receiver |
| 1367 | __ bind(&call_to_object); |
| 1368 | __ push(r3); |
| 1369 | __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); |
| 1370 | __ b(&push_receiver); |
| 1371 | |
| 1372 | __ bind(&use_global_proxy); |
| 1373 | __ LoadP(r3, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX)); |
| 1374 | __ LoadP(r3, FieldMemOperand(r3, GlobalObject::kGlobalProxyOffset)); |
| 1375 | |
| 1376 | // Push the receiver. |
| 1377 | // r3: receiver |
| 1378 | __ bind(&push_receiver); |
| 1379 | __ push(r3); |
| 1380 | |
| 1381 | // Copy all arguments from the array to the stack. |
| 1382 | Label entry, loop; |
| 1383 | __ LoadP(r3, MemOperand(fp, kIndexOffset)); |
| 1384 | __ b(&entry); |
| 1385 | |
| 1386 | // Load the current argument from the arguments array and push it to the |
| 1387 | // stack. |
| 1388 | // r3: current argument index |
| 1389 | __ bind(&loop); |
| 1390 | __ LoadP(r4, MemOperand(fp, kArgsOffset)); |
| 1391 | __ Push(r4, r3); |
| 1392 | |
| 1393 | // Call the runtime to access the property in the arguments array. |
| 1394 | __ CallRuntime(Runtime::kGetProperty, 2); |
| 1395 | __ push(r3); |
| 1396 | |
| 1397 | // Use inline caching to access the arguments. |
| 1398 | __ LoadP(r3, MemOperand(fp, kIndexOffset)); |
| 1399 | __ AddSmiLiteral(r3, r3, Smi::FromInt(1), r0); |
| 1400 | __ StoreP(r3, MemOperand(fp, kIndexOffset)); |
| 1401 | |
| 1402 | // Test if the copy loop has finished copying all the elements from the |
| 1403 | // arguments object. |
| 1404 | __ bind(&entry); |
| 1405 | __ LoadP(r4, MemOperand(fp, kLimitOffset)); |
| 1406 | __ cmp(r3, r4); |
| 1407 | __ bne(&loop); |
| 1408 | |
| 1409 | // Call the function. |
| 1410 | Label call_proxy; |
| 1411 | ParameterCount actual(r3); |
| 1412 | __ SmiUntag(r3); |
| 1413 | __ LoadP(r4, MemOperand(fp, kFunctionOffset)); |
| 1414 | __ CompareObjectType(r4, r5, r5, JS_FUNCTION_TYPE); |
| 1415 | __ bne(&call_proxy); |
| 1416 | __ InvokeFunction(r4, actual, CALL_FUNCTION, NullCallWrapper()); |
| 1417 | |
| 1418 | __ LeaveFrame(StackFrame::INTERNAL, 3 * kPointerSize); |
| 1419 | __ blr(); |
| 1420 | |
| 1421 | // Call the function proxy. |
| 1422 | __ bind(&call_proxy); |
| 1423 | __ push(r4); // add function proxy as last argument |
| 1424 | __ addi(r3, r3, Operand(1)); |
| 1425 | __ li(r5, Operand::Zero()); |
| 1426 | __ GetBuiltinFunction(r4, Builtins::CALL_FUNCTION_PROXY); |
| 1427 | __ Call(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
| 1428 | RelocInfo::CODE_TARGET); |
| 1429 | |
| 1430 | // Tear down the internal frame and remove function, receiver and args. |
| 1431 | } |
| 1432 | __ addi(sp, sp, Operand(3 * kPointerSize)); |
| 1433 | __ blr(); |
| 1434 | } |
| 1435 | |
| 1436 | |
| 1437 | static void ArgumentAdaptorStackCheck(MacroAssembler* masm, |
| 1438 | Label* stack_overflow) { |
| 1439 | // ----------- S t a t e ------------- |
| 1440 | // -- r3 : actual number of arguments |
| 1441 | // -- r4 : function (passed through to callee) |
| 1442 | // -- r5 : expected number of arguments |
| 1443 | // ----------------------------------- |
| 1444 | // Check the stack for overflow. We are not trying to catch |
| 1445 | // interruptions (e.g. debug break and preemption) here, so the "real stack |
| 1446 | // limit" is checked. |
| 1447 | __ LoadRoot(r8, Heap::kRealStackLimitRootIndex); |
| 1448 | // Make r8 the space we have left. The stack might already be overflowed |
| 1449 | // here which will cause r8 to become negative. |
| 1450 | __ sub(r8, sp, r8); |
| 1451 | // Check if the arguments will overflow the stack. |
| 1452 | __ ShiftLeftImm(r0, r5, Operand(kPointerSizeLog2)); |
| 1453 | __ cmp(r8, r0); |
| 1454 | __ ble(stack_overflow); // Signed comparison. |
| 1455 | } |
| 1456 | |
| 1457 | |
| 1458 | static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) { |
| 1459 | __ SmiTag(r3); |
| 1460 | __ LoadSmiLiteral(r7, Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); |
| 1461 | __ mflr(r0); |
| 1462 | __ push(r0); |
| 1463 | #if V8_OOL_CONSTANT_POOL |
| 1464 | __ Push(fp, kConstantPoolRegister, r7, r4, r3); |
| 1465 | #else |
| 1466 | __ Push(fp, r7, r4, r3); |
| 1467 | #endif |
| 1468 | __ addi(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp + |
| 1469 | kPointerSize)); |
| 1470 | } |
| 1471 | |
| 1472 | |
| 1473 | static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) { |
| 1474 | // ----------- S t a t e ------------- |
| 1475 | // -- r3 : result being passed through |
| 1476 | // ----------------------------------- |
| 1477 | // Get the number of arguments passed (as a smi), tear down the frame and |
| 1478 | // then tear down the parameters. |
| 1479 | __ LoadP(r4, MemOperand(fp, -(StandardFrameConstants::kFixedFrameSizeFromFp + |
| 1480 | kPointerSize))); |
| 1481 | int stack_adjustment = kPointerSize; // adjust for receiver |
| 1482 | __ LeaveFrame(StackFrame::ARGUMENTS_ADAPTOR, stack_adjustment); |
| 1483 | __ SmiToPtrArrayOffset(r0, r4); |
| 1484 | __ add(sp, sp, r0); |
| 1485 | } |
| 1486 | |
| 1487 | |
| 1488 | void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) { |
| 1489 | // ----------- S t a t e ------------- |
| 1490 | // -- r3 : actual number of arguments |
| 1491 | // -- r4 : function (passed through to callee) |
| 1492 | // -- r5 : expected number of arguments |
| 1493 | // ----------------------------------- |
| 1494 | |
| 1495 | Label stack_overflow; |
| 1496 | ArgumentAdaptorStackCheck(masm, &stack_overflow); |
| 1497 | Label invoke, dont_adapt_arguments; |
| 1498 | |
| 1499 | Label enough, too_few; |
| 1500 | __ LoadP(ip, FieldMemOperand(r4, JSFunction::kCodeEntryOffset)); |
| 1501 | __ cmp(r3, r5); |
| 1502 | __ blt(&too_few); |
| 1503 | __ cmpi(r5, Operand(SharedFunctionInfo::kDontAdaptArgumentsSentinel)); |
| 1504 | __ beq(&dont_adapt_arguments); |
| 1505 | |
| 1506 | { // Enough parameters: actual >= expected |
| 1507 | __ bind(&enough); |
| 1508 | EnterArgumentsAdaptorFrame(masm); |
| 1509 | |
| 1510 | // Calculate copy start address into r3 and copy end address into r5. |
| 1511 | // r3: actual number of arguments as a smi |
| 1512 | // r4: function |
| 1513 | // r5: expected number of arguments |
| 1514 | // ip: code entry to call |
| 1515 | __ SmiToPtrArrayOffset(r3, r3); |
| 1516 | __ add(r3, r3, fp); |
| 1517 | // adjust for return address and receiver |
| 1518 | __ addi(r3, r3, Operand(2 * kPointerSize)); |
| 1519 | __ ShiftLeftImm(r5, r5, Operand(kPointerSizeLog2)); |
| 1520 | __ sub(r5, r3, r5); |
| 1521 | |
| 1522 | // Copy the arguments (including the receiver) to the new stack frame. |
| 1523 | // r3: copy start address |
| 1524 | // r4: function |
| 1525 | // r5: copy end address |
| 1526 | // ip: code entry to call |
| 1527 | |
| 1528 | Label copy; |
| 1529 | __ bind(©); |
| 1530 | __ LoadP(r0, MemOperand(r3, 0)); |
| 1531 | __ push(r0); |
| 1532 | __ cmp(r3, r5); // Compare before moving to next argument. |
| 1533 | __ subi(r3, r3, Operand(kPointerSize)); |
| 1534 | __ bne(©); |
| 1535 | |
| 1536 | __ b(&invoke); |
| 1537 | } |
| 1538 | |
| 1539 | { // Too few parameters: Actual < expected |
| 1540 | __ bind(&too_few); |
| 1541 | EnterArgumentsAdaptorFrame(masm); |
| 1542 | |
| 1543 | // Calculate copy start address into r0 and copy end address is fp. |
| 1544 | // r3: actual number of arguments as a smi |
| 1545 | // r4: function |
| 1546 | // r5: expected number of arguments |
| 1547 | // ip: code entry to call |
| 1548 | __ SmiToPtrArrayOffset(r3, r3); |
| 1549 | __ add(r3, r3, fp); |
| 1550 | |
| 1551 | // Copy the arguments (including the receiver) to the new stack frame. |
| 1552 | // r3: copy start address |
| 1553 | // r4: function |
| 1554 | // r5: expected number of arguments |
| 1555 | // ip: code entry to call |
| 1556 | Label copy; |
| 1557 | __ bind(©); |
| 1558 | // Adjust load for return address and receiver. |
| 1559 | __ LoadP(r0, MemOperand(r3, 2 * kPointerSize)); |
| 1560 | __ push(r0); |
| 1561 | __ cmp(r3, fp); // Compare before moving to next argument. |
| 1562 | __ subi(r3, r3, Operand(kPointerSize)); |
| 1563 | __ bne(©); |
| 1564 | |
| 1565 | // Fill the remaining expected arguments with undefined. |
| 1566 | // r4: function |
| 1567 | // r5: expected number of arguments |
| 1568 | // ip: code entry to call |
| 1569 | __ LoadRoot(r0, Heap::kUndefinedValueRootIndex); |
| 1570 | __ ShiftLeftImm(r5, r5, Operand(kPointerSizeLog2)); |
| 1571 | __ sub(r5, fp, r5); |
| 1572 | // Adjust for frame. |
| 1573 | __ subi(r5, r5, Operand(StandardFrameConstants::kFixedFrameSizeFromFp + |
| 1574 | 2 * kPointerSize)); |
| 1575 | |
| 1576 | Label fill; |
| 1577 | __ bind(&fill); |
| 1578 | __ push(r0); |
| 1579 | __ cmp(sp, r5); |
| 1580 | __ bne(&fill); |
| 1581 | } |
| 1582 | |
| 1583 | // Call the entry point. |
| 1584 | __ bind(&invoke); |
| 1585 | __ CallJSEntry(ip); |
| 1586 | |
| 1587 | // Store offset of return address for deoptimizer. |
| 1588 | masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset()); |
| 1589 | |
| 1590 | // Exit frame and return. |
| 1591 | LeaveArgumentsAdaptorFrame(masm); |
| 1592 | __ blr(); |
| 1593 | |
| 1594 | |
| 1595 | // ------------------------------------------- |
| 1596 | // Dont adapt arguments. |
| 1597 | // ------------------------------------------- |
| 1598 | __ bind(&dont_adapt_arguments); |
| 1599 | __ JumpToJSEntry(ip); |
| 1600 | |
| 1601 | __ bind(&stack_overflow); |
| 1602 | { |
| 1603 | FrameScope frame(masm, StackFrame::MANUAL); |
| 1604 | EnterArgumentsAdaptorFrame(masm); |
| 1605 | __ InvokeBuiltin(Builtins::STACK_OVERFLOW, CALL_FUNCTION); |
| 1606 | __ bkpt(0); |
| 1607 | } |
| 1608 | } |
| 1609 | |
| 1610 | |
| 1611 | #undef __ |
| 1612 | } |
| 1613 | } // namespace v8::internal |
| 1614 | |
| 1615 | #endif // V8_TARGET_ARCH_PPC |