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Issue 23480013: Turn interrupt and stack check into builtins. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: fix mips Created 7 years, 3 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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289 VisitDeclarations(scope()->declarations()); 289 VisitDeclarations(scope()->declarations());
290 } 290 }
291 291
292 { Comment cmnt(masm_, "[ Stack check"); 292 { Comment cmnt(masm_, "[ Stack check");
293 PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS); 293 PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS);
294 Label ok; 294 Label ok;
295 __ LoadRoot(ip, Heap::kStackLimitRootIndex); 295 __ LoadRoot(ip, Heap::kStackLimitRootIndex);
296 __ cmp(sp, Operand(ip)); 296 __ cmp(sp, Operand(ip));
297 __ b(hs, &ok); 297 __ b(hs, &ok);
298 PredictableCodeSizeScope predictable(masm_, 2 * Assembler::kInstrSize); 298 PredictableCodeSizeScope predictable(masm_, 2 * Assembler::kInstrSize);
299 StackCheckStub stub; 299 __ Call(isolate()->builtins()->StackCheck(), RelocInfo::CODE_TARGET);
300 __ CallStub(&stub);
301 __ bind(&ok); 300 __ bind(&ok);
302 } 301 }
303 302
304 { Comment cmnt(masm_, "[ Body"); 303 { Comment cmnt(masm_, "[ Body");
305 ASSERT(loop_depth() == 0); 304 ASSERT(loop_depth() == 0);
306 VisitStatements(function()->body()); 305 VisitStatements(function()->body());
307 ASSERT(loop_depth() == 0); 306 ASSERT(loop_depth() == 0);
308 } 307 }
309 } 308 }
310 309
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359 358
360 int weight = 1; 359 int weight = 1;
361 if (FLAG_weighted_back_edges) { 360 if (FLAG_weighted_back_edges) {
362 ASSERT(back_edge_target->is_bound()); 361 ASSERT(back_edge_target->is_bound());
363 int distance = masm_->SizeOfCodeGeneratedSince(back_edge_target); 362 int distance = masm_->SizeOfCodeGeneratedSince(back_edge_target);
364 weight = Min(kMaxBackEdgeWeight, 363 weight = Min(kMaxBackEdgeWeight,
365 Max(1, distance / kCodeSizeMultiplier)); 364 Max(1, distance / kCodeSizeMultiplier));
366 } 365 }
367 EmitProfilingCounterDecrement(weight); 366 EmitProfilingCounterDecrement(weight);
368 __ b(pl, &ok); 367 __ b(pl, &ok);
369 InterruptStub stub; 368 __ Call(isolate()->builtins()->InterruptCheck(), RelocInfo::CODE_TARGET);
370 __ CallStub(&stub);
371 369
372 // Record a mapping of this PC offset to the OSR id. This is used to find 370 // Record a mapping of this PC offset to the OSR id. This is used to find
373 // the AST id from the unoptimized code in order to use it as a key into 371 // the AST id from the unoptimized code in order to use it as a key into
374 // the deoptimization input data found in the optimized code. 372 // the deoptimization input data found in the optimized code.
375 RecordBackEdge(stmt->OsrEntryId()); 373 RecordBackEdge(stmt->OsrEntryId());
376 374
377 EmitProfilingCounterReset(); 375 EmitProfilingCounterReset();
378 376
379 __ bind(&ok); 377 __ bind(&ok);
380 PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS); 378 PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS);
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409 } 407 }
410 EmitProfilingCounterDecrement(weight); 408 EmitProfilingCounterDecrement(weight);
411 Label ok; 409 Label ok;
412 __ b(pl, &ok); 410 __ b(pl, &ok);
413 __ push(r0); 411 __ push(r0);
414 if (info_->ShouldSelfOptimize() && FLAG_direct_self_opt) { 412 if (info_->ShouldSelfOptimize() && FLAG_direct_self_opt) {
415 __ ldr(r2, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); 413 __ ldr(r2, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
416 __ push(r2); 414 __ push(r2);
417 __ CallRuntime(Runtime::kOptimizeFunctionOnNextCall, 1); 415 __ CallRuntime(Runtime::kOptimizeFunctionOnNextCall, 1);
418 } else { 416 } else {
419 InterruptStub stub; 417 __ Call(isolate()->builtins()->InterruptCheck(),
420 __ CallStub(&stub); 418 RelocInfo::CODE_TARGET);
421 } 419 }
422 __ pop(r0); 420 __ pop(r0);
423 EmitProfilingCounterReset(); 421 EmitProfilingCounterReset();
424 __ bind(&ok); 422 __ bind(&ok);
425 } 423 }
426 424
427 #ifdef DEBUG 425 #ifdef DEBUG
428 // Add a label for checking the size of the code used for returning. 426 // Add a label for checking the size of the code used for returning.
429 Label check_exit_codesize; 427 Label check_exit_codesize;
430 masm_->bind(&check_exit_codesize); 428 masm_->bind(&check_exit_codesize);
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4886 *context_length = 0; 4884 *context_length = 0;
4887 return previous_; 4885 return previous_;
4888 } 4886 }
4889 4887
4890 4888
4891 #undef __ 4889 #undef __
4892 4890
4893 } } // namespace v8::internal 4891 } } // namespace v8::internal
4894 4892
4895 #endif // V8_TARGET_ARCH_ARM 4893 #endif // V8_TARGET_ARCH_ARM
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