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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_X64 | 5 #if V8_TARGET_ARCH_X64 |
6 | 6 |
7 #include "src/ast/scopes.h" | 7 #include "src/ast/scopes.h" |
8 #include "src/code-factory.h" | 8 #include "src/code-factory.h" |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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2442 OperandStackDepthDecrement(arg_count + 1); | 2442 OperandStackDepthDecrement(arg_count + 1); |
2443 | 2443 |
2444 RecordJSReturnSite(expr); | 2444 RecordJSReturnSite(expr); |
2445 | 2445 |
2446 // Restore context register. | 2446 // Restore context register. |
2447 __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); | 2447 __ movp(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); |
2448 // Discard the function left on TOS. | 2448 // Discard the function left on TOS. |
2449 context()->DropAndPlug(1, rax); | 2449 context()->DropAndPlug(1, rax); |
2450 } | 2450 } |
2451 | 2451 |
2452 void FullCodeGenerator::EmitResolvePossiblyDirectEval(Call* expr) { | 2452 |
2453 int arg_count = expr->arguments()->length(); | 2453 void FullCodeGenerator::EmitResolvePossiblyDirectEval(int arg_count) { |
2454 // Push copy of the first argument or undefined if it doesn't exist. | 2454 // Push copy of the first argument or undefined if it doesn't exist. |
2455 if (arg_count > 0) { | 2455 if (arg_count > 0) { |
2456 __ Push(Operand(rsp, arg_count * kPointerSize)); | 2456 __ Push(Operand(rsp, arg_count * kPointerSize)); |
2457 } else { | 2457 } else { |
2458 __ PushRoot(Heap::kUndefinedValueRootIndex); | 2458 __ PushRoot(Heap::kUndefinedValueRootIndex); |
2459 } | 2459 } |
2460 | 2460 |
2461 // Push the enclosing function. | 2461 // Push the enclosing function. |
2462 __ Push(Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); | 2462 __ Push(Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); |
2463 | 2463 |
2464 // Push the language mode. | 2464 // Push the language mode. |
2465 __ Push(Smi::FromInt(language_mode())); | 2465 __ Push(Smi::FromInt(language_mode())); |
2466 | 2466 |
2467 // Push the source position of the eval call. | 2467 // Push the start position of the scope the calls resides in. |
2468 __ Push(Smi::FromInt(expr->position())); | 2468 __ Push(Smi::FromInt(scope()->start_position())); |
2469 | 2469 |
2470 // Do the runtime call. | 2470 // Do the runtime call. |
2471 __ CallRuntime(Runtime::kResolvePossiblyDirectEval); | 2471 __ CallRuntime(Runtime::kResolvePossiblyDirectEval); |
2472 } | 2472 } |
2473 | 2473 |
2474 | 2474 |
2475 // See http://www.ecma-international.org/ecma-262/6.0/#sec-function-calls. | 2475 // See http://www.ecma-international.org/ecma-262/6.0/#sec-function-calls. |
2476 void FullCodeGenerator::PushCalleeAndWithBaseObject(Call* expr) { | 2476 void FullCodeGenerator::PushCalleeAndWithBaseObject(Call* expr) { |
2477 VariableProxy* callee = expr->expression()->AsVariableProxy(); | 2477 VariableProxy* callee = expr->expression()->AsVariableProxy(); |
2478 if (callee->var()->IsLookupSlot()) { | 2478 if (callee->var()->IsLookupSlot()) { |
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2507 } else { | 2507 } else { |
2508 VisitForStackValue(callee); | 2508 VisitForStackValue(callee); |
2509 // refEnv.WithBaseObject() | 2509 // refEnv.WithBaseObject() |
2510 OperandStackDepthIncrement(1); | 2510 OperandStackDepthIncrement(1); |
2511 __ PushRoot(Heap::kUndefinedValueRootIndex); | 2511 __ PushRoot(Heap::kUndefinedValueRootIndex); |
2512 } | 2512 } |
2513 } | 2513 } |
2514 | 2514 |
2515 | 2515 |
2516 void FullCodeGenerator::EmitPossiblyEvalCall(Call* expr) { | 2516 void FullCodeGenerator::EmitPossiblyEvalCall(Call* expr) { |
2517 // In a call to eval, we first call Runtime_ResolvePossiblyDirectEval | 2517 // In a call to eval, we first call RuntimeHidden_ResolvePossiblyDirectEval |
2518 // to resolve the function we need to call. Then we call the resolved | 2518 // to resolve the function we need to call. Then we call the resolved |
2519 // function using the given arguments. | 2519 // function using the given arguments. |
2520 ZoneList<Expression*>* args = expr->arguments(); | 2520 ZoneList<Expression*>* args = expr->arguments(); |
2521 int arg_count = args->length(); | 2521 int arg_count = args->length(); |
2522 PushCalleeAndWithBaseObject(expr); | 2522 PushCalleeAndWithBaseObject(expr); |
2523 | 2523 |
2524 // Push the arguments. | 2524 // Push the arguments. |
2525 for (int i = 0; i < arg_count; i++) { | 2525 for (int i = 0; i < arg_count; i++) { |
2526 VisitForStackValue(args->at(i)); | 2526 VisitForStackValue(args->at(i)); |
2527 } | 2527 } |
2528 | 2528 |
2529 // Push a copy of the function (found below the arguments) and resolve | 2529 // Push a copy of the function (found below the arguments) and resolve |
2530 // eval. | 2530 // eval. |
2531 __ Push(Operand(rsp, (arg_count + 1) * kPointerSize)); | 2531 __ Push(Operand(rsp, (arg_count + 1) * kPointerSize)); |
2532 EmitResolvePossiblyDirectEval(expr); | 2532 EmitResolvePossiblyDirectEval(arg_count); |
2533 | 2533 |
2534 // Touch up the callee. | 2534 // Touch up the callee. |
2535 __ movp(Operand(rsp, (arg_count + 1) * kPointerSize), rax); | 2535 __ movp(Operand(rsp, (arg_count + 1) * kPointerSize), rax); |
2536 | 2536 |
2537 PrepareForBailoutForId(expr->EvalId(), NO_REGISTERS); | 2537 PrepareForBailoutForId(expr->EvalId(), NO_REGISTERS); |
2538 | 2538 |
2539 SetCallPosition(expr); | 2539 SetCallPosition(expr); |
2540 __ movp(rdi, Operand(rsp, (arg_count + 1) * kPointerSize)); | 2540 __ movp(rdi, Operand(rsp, (arg_count + 1) * kPointerSize)); |
2541 __ Set(rax, arg_count); | 2541 __ Set(rax, arg_count); |
2542 __ Call(isolate()->builtins()->Call(ConvertReceiverMode::kAny, | 2542 __ Call(isolate()->builtins()->Call(ConvertReceiverMode::kAny, |
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3879 DCHECK_EQ( | 3879 DCHECK_EQ( |
3880 isolate->builtins()->OnStackReplacement()->entry(), | 3880 isolate->builtins()->OnStackReplacement()->entry(), |
3881 Assembler::target_address_at(call_target_address, unoptimized_code)); | 3881 Assembler::target_address_at(call_target_address, unoptimized_code)); |
3882 return ON_STACK_REPLACEMENT; | 3882 return ON_STACK_REPLACEMENT; |
3883 } | 3883 } |
3884 | 3884 |
3885 } // namespace internal | 3885 } // namespace internal |
3886 } // namespace v8 | 3886 } // namespace v8 |
3887 | 3887 |
3888 #endif // V8_TARGET_ARCH_X64 | 3888 #endif // V8_TARGET_ARCH_X64 |
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