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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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291 VisitVariableDeclaration(function); 291 VisitVariableDeclaration(function);
292 } 292 }
293 VisitDeclarations(scope()->declarations()); 293 VisitDeclarations(scope()->declarations());
294 } 294 }
295 295
296 { Comment cmnt(masm_, "[ Stack check"); 296 { Comment cmnt(masm_, "[ Stack check");
297 PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS); 297 PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS);
298 Label ok; 298 Label ok;
299 __ LoadRoot(t0, Heap::kStackLimitRootIndex); 299 __ LoadRoot(t0, Heap::kStackLimitRootIndex);
300 __ Branch(&ok, hs, sp, Operand(t0)); 300 __ Branch(&ok, hs, sp, Operand(t0));
301 StackCheckStub stub; 301 __ Call(isolate()->builtins()->StackCheck(), RelocInfo::CODE_TARGET);
302 __ CallStub(&stub);
303 __ bind(&ok); 302 __ bind(&ok);
304 } 303 }
305 304
306 { Comment cmnt(masm_, "[ Body"); 305 { Comment cmnt(masm_, "[ Body");
307 ASSERT(loop_depth() == 0); 306 ASSERT(loop_depth() == 0);
308 VisitStatements(function()->body()); 307 VisitStatements(function()->body());
309 ASSERT(loop_depth() == 0); 308 ASSERT(loop_depth() == 0);
310 } 309 }
311 } 310 }
312 311
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362 int weight = 1; 361 int weight = 1;
363 if (FLAG_weighted_back_edges) { 362 if (FLAG_weighted_back_edges) {
364 ASSERT(back_edge_target->is_bound()); 363 ASSERT(back_edge_target->is_bound());
365 int distance = masm_->SizeOfCodeGeneratedSince(back_edge_target); 364 int distance = masm_->SizeOfCodeGeneratedSince(back_edge_target);
366 weight = Min(kMaxBackEdgeWeight, 365 weight = Min(kMaxBackEdgeWeight,
367 Max(1, distance / kCodeSizeMultiplier)); 366 Max(1, distance / kCodeSizeMultiplier));
368 } 367 }
369 EmitProfilingCounterDecrement(weight); 368 EmitProfilingCounterDecrement(weight);
370 __ slt(at, a3, zero_reg); 369 __ slt(at, a3, zero_reg);
371 __ beq(at, zero_reg, &ok); 370 __ beq(at, zero_reg, &ok);
372 // CallStub will emit a li t9 first, so it is safe to use the delay slot. 371 // Call will emit a li t9 first, so it is safe to use the delay slot.
373 InterruptStub stub; 372 __ Call(isolate()->builtins()->InterruptCheck(), RelocInfo::CODE_TARGET);
374 __ CallStub(&stub);
375 // Record a mapping of this PC offset to the OSR id. This is used to find 373 // Record a mapping of this PC offset to the OSR id. This is used to find
376 // the AST id from the unoptimized code in order to use it as a key into 374 // the AST id from the unoptimized code in order to use it as a key into
377 // the deoptimization input data found in the optimized code. 375 // the deoptimization input data found in the optimized code.
378 RecordBackEdge(stmt->OsrEntryId()); 376 RecordBackEdge(stmt->OsrEntryId());
379 EmitProfilingCounterReset(); 377 EmitProfilingCounterReset();
380 378
381 __ bind(&ok); 379 __ bind(&ok);
382 PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS); 380 PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS);
383 // Record a mapping of the OSR id to this PC. This is used if the OSR 381 // Record a mapping of the OSR id to this PC. This is used if the OSR
384 // entry becomes the target of a bailout. We don't expect it to be, but 382 // entry becomes the target of a bailout. We don't expect it to be, but
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411 } 409 }
412 EmitProfilingCounterDecrement(weight); 410 EmitProfilingCounterDecrement(weight);
413 Label ok; 411 Label ok;
414 __ Branch(&ok, ge, a3, Operand(zero_reg)); 412 __ Branch(&ok, ge, a3, Operand(zero_reg));
415 __ push(v0); 413 __ push(v0);
416 if (info_->ShouldSelfOptimize() && FLAG_direct_self_opt) { 414 if (info_->ShouldSelfOptimize() && FLAG_direct_self_opt) {
417 __ lw(a2, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); 415 __ lw(a2, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
418 __ push(a2); 416 __ push(a2);
419 __ CallRuntime(Runtime::kOptimizeFunctionOnNextCall, 1); 417 __ CallRuntime(Runtime::kOptimizeFunctionOnNextCall, 1);
420 } else { 418 } else {
421 InterruptStub stub; 419 __ Call(isolate()->builtins()->InterruptCheck(),
422 __ CallStub(&stub); 420 RelocInfo::CODE_TARGET);
423 } 421 }
424 __ pop(v0); 422 __ pop(v0);
425 EmitProfilingCounterReset(); 423 EmitProfilingCounterReset();
426 __ bind(&ok); 424 __ bind(&ok);
427 } 425 }
428 426
429 #ifdef DEBUG 427 #ifdef DEBUG
430 // Add a label for checking the size of the code used for returning. 428 // Add a label for checking the size of the code used for returning.
431 Label check_exit_codesize; 429 Label check_exit_codesize;
432 masm_->bind(&check_exit_codesize); 430 masm_->bind(&check_exit_codesize);
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4918 *context_length = 0; 4916 *context_length = 0;
4919 return previous_; 4917 return previous_;
4920 } 4918 }
4921 4919
4922 4920
4923 #undef __ 4921 #undef __
4924 4922
4925 } } // namespace v8::internal 4923 } } // namespace v8::internal
4926 4924
4927 #endif // V8_TARGET_ARCH_MIPS 4925 #endif // V8_TARGET_ARCH_MIPS
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