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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #if V8_TARGET_ARCH_ARM | 5 #if V8_TARGET_ARCH_ARM |
| 6 | 6 |
| 7 #include "src/code-factory.h" | 7 #include "src/code-factory.h" |
| 8 #include "src/code-stubs.h" | 8 #include "src/code-stubs.h" |
| 9 #include "src/codegen.h" | 9 #include "src/codegen.h" |
| 10 #include "src/compiler.h" | 10 #include "src/compiler.h" |
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| 98 // o fp: our caller's frame pointer | 98 // o fp: our caller's frame pointer |
| 99 // o sp: stack pointer | 99 // o sp: stack pointer |
| 100 // o lr: return address | 100 // o lr: return address |
| 101 // | 101 // |
| 102 // The function builds a JS frame. Please see JavaScriptFrameConstants in | 102 // The function builds a JS frame. Please see JavaScriptFrameConstants in |
| 103 // frames-arm.h for its layout. | 103 // frames-arm.h for its layout. |
| 104 void FullCodeGenerator::Generate() { | 104 void FullCodeGenerator::Generate() { |
| 105 CompilationInfo* info = info_; | 105 CompilationInfo* info = info_; |
| 106 profiling_counter_ = isolate()->factory()->NewCell( | 106 profiling_counter_ = isolate()->factory()->NewCell( |
| 107 Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate())); | 107 Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate())); |
| 108 SetFunctionPosition(function()); | 108 SetFunctionPosition(literal()); |
| 109 Comment cmnt(masm_, "[ function compiled by full code generator"); | 109 Comment cmnt(masm_, "[ function compiled by full code generator"); |
| 110 | 110 |
| 111 ProfileEntryHookStub::MaybeCallEntryHook(masm_); | 111 ProfileEntryHookStub::MaybeCallEntryHook(masm_); |
| 112 | 112 |
| 113 #ifdef DEBUG | 113 #ifdef DEBUG |
| 114 if (strlen(FLAG_stop_at) > 0 && | 114 if (strlen(FLAG_stop_at) > 0 && |
| 115 info->literal()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { | 115 info->literal()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { |
| 116 __ stop("stop-at"); | 116 __ stop("stop-at"); |
| 117 } | 117 } |
| 118 #endif | 118 #endif |
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| 311 __ mov(r1, Operand(Smi::FromInt(num_parameters))); | 311 __ mov(r1, Operand(Smi::FromInt(num_parameters))); |
| 312 __ Push(r3, r2, r1); | 312 __ Push(r3, r2, r1); |
| 313 | 313 |
| 314 // Arguments to ArgumentsAccessStub: | 314 // Arguments to ArgumentsAccessStub: |
| 315 // function, receiver address, parameter count. | 315 // function, receiver address, parameter count. |
| 316 // The stub will rewrite receiver and parameter count if the previous | 316 // The stub will rewrite receiver and parameter count if the previous |
| 317 // stack frame was an arguments adapter frame. | 317 // stack frame was an arguments adapter frame. |
| 318 ArgumentsAccessStub::Type type; | 318 ArgumentsAccessStub::Type type; |
| 319 if (is_strict(language_mode()) || !has_simple_parameters()) { | 319 if (is_strict(language_mode()) || !has_simple_parameters()) { |
| 320 type = ArgumentsAccessStub::NEW_STRICT; | 320 type = ArgumentsAccessStub::NEW_STRICT; |
| 321 } else if (function()->has_duplicate_parameters()) { | 321 } else if (literal()->has_duplicate_parameters()) { |
| 322 type = ArgumentsAccessStub::NEW_SLOPPY_SLOW; | 322 type = ArgumentsAccessStub::NEW_SLOPPY_SLOW; |
| 323 } else { | 323 } else { |
| 324 type = ArgumentsAccessStub::NEW_SLOPPY_FAST; | 324 type = ArgumentsAccessStub::NEW_SLOPPY_FAST; |
| 325 } | 325 } |
| 326 ArgumentsAccessStub stub(isolate(), type); | 326 ArgumentsAccessStub stub(isolate(), type); |
| 327 __ CallStub(&stub); | 327 __ CallStub(&stub); |
| 328 | 328 |
| 329 SetVar(arguments, r0, r1, r2); | 329 SetVar(arguments, r0, r1, r2); |
| 330 } | 330 } |
| 331 | 331 |
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| 360 Handle<Code> stack_check = isolate()->builtins()->StackCheck(); | 360 Handle<Code> stack_check = isolate()->builtins()->StackCheck(); |
| 361 PredictableCodeSizeScope predictable(masm_); | 361 PredictableCodeSizeScope predictable(masm_); |
| 362 predictable.ExpectSize( | 362 predictable.ExpectSize( |
| 363 masm_->CallSize(stack_check, RelocInfo::CODE_TARGET)); | 363 masm_->CallSize(stack_check, RelocInfo::CODE_TARGET)); |
| 364 __ Call(stack_check, RelocInfo::CODE_TARGET); | 364 __ Call(stack_check, RelocInfo::CODE_TARGET); |
| 365 __ bind(&ok); | 365 __ bind(&ok); |
| 366 } | 366 } |
| 367 | 367 |
| 368 { Comment cmnt(masm_, "[ Body"); | 368 { Comment cmnt(masm_, "[ Body"); |
| 369 DCHECK(loop_depth() == 0); | 369 DCHECK(loop_depth() == 0); |
| 370 VisitStatements(function()->body()); | 370 VisitStatements(literal()->body()); |
| 371 DCHECK(loop_depth() == 0); | 371 DCHECK(loop_depth() == 0); |
| 372 } | 372 } |
| 373 } | 373 } |
| 374 | 374 |
| 375 // Always emit a 'return undefined' in case control fell off the end of | 375 // Always emit a 'return undefined' in case control fell off the end of |
| 376 // the body. | 376 // the body. |
| 377 { Comment cmnt(masm_, "[ return <undefined>;"); | 377 { Comment cmnt(masm_, "[ return <undefined>;"); |
| 378 __ LoadRoot(r0, Heap::kUndefinedValueRootIndex); | 378 __ LoadRoot(r0, Heap::kUndefinedValueRootIndex); |
| 379 } | 379 } |
| 380 EmitReturnSequence(); | 380 EmitReturnSequence(); |
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| 487 RelocInfo::CODE_TARGET); | 487 RelocInfo::CODE_TARGET); |
| 488 __ pop(r0); | 488 __ pop(r0); |
| 489 EmitProfilingCounterReset(); | 489 EmitProfilingCounterReset(); |
| 490 __ bind(&ok); | 490 __ bind(&ok); |
| 491 | 491 |
| 492 // Make sure that the constant pool is not emitted inside of the return | 492 // Make sure that the constant pool is not emitted inside of the return |
| 493 // sequence. | 493 // sequence. |
| 494 { Assembler::BlockConstPoolScope block_const_pool(masm_); | 494 { Assembler::BlockConstPoolScope block_const_pool(masm_); |
| 495 int32_t arg_count = info_->scope()->num_parameters() + 1; | 495 int32_t arg_count = info_->scope()->num_parameters() + 1; |
| 496 int32_t sp_delta = arg_count * kPointerSize; | 496 int32_t sp_delta = arg_count * kPointerSize; |
| 497 SetReturnPosition(function()); | 497 SetReturnPosition(literal()); |
| 498 // TODO(svenpanne) The code below is sometimes 4 words, sometimes 5! | 498 // TODO(svenpanne) The code below is sometimes 4 words, sometimes 5! |
| 499 PredictableCodeSizeScope predictable(masm_, -1); | 499 PredictableCodeSizeScope predictable(masm_, -1); |
| 500 int no_frame_start = __ LeaveFrame(StackFrame::JAVA_SCRIPT); | 500 int no_frame_start = __ LeaveFrame(StackFrame::JAVA_SCRIPT); |
| 501 { ConstantPoolUnavailableScope constant_pool_unavailable(masm_); | 501 { ConstantPoolUnavailableScope constant_pool_unavailable(masm_); |
| 502 __ add(sp, sp, Operand(sp_delta)); | 502 __ add(sp, sp, Operand(sp_delta)); |
| 503 __ Jump(lr); | 503 __ Jump(lr); |
| 504 info_->AddNoFrameRange(no_frame_start, masm_->pc_offset()); | 504 info_->AddNoFrameRange(no_frame_start, masm_->pc_offset()); |
| 505 } | 505 } |
| 506 } | 506 } |
| 507 } | 507 } |
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| 5414 DCHECK(interrupt_address == | 5414 DCHECK(interrupt_address == |
| 5415 isolate->builtins()->OsrAfterStackCheck()->entry()); | 5415 isolate->builtins()->OsrAfterStackCheck()->entry()); |
| 5416 return OSR_AFTER_STACK_CHECK; | 5416 return OSR_AFTER_STACK_CHECK; |
| 5417 } | 5417 } |
| 5418 | 5418 |
| 5419 | 5419 |
| 5420 } // namespace internal | 5420 } // namespace internal |
| 5421 } // namespace v8 | 5421 } // namespace v8 |
| 5422 | 5422 |
| 5423 #endif // V8_TARGET_ARCH_ARM | 5423 #endif // V8_TARGET_ARCH_ARM |
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