Ryan Macnak
e2f99e4cee
Also, remove paranoid checks from ProfilerDartStackWalker by - setting the VM tag to Dart only after initializing the exit slot - setting the VM tag to Runtime for leaf runtime function - bailing out when in the prologue of the invocation stub's callee Change-Id: Ifd1caee2203f8863b17fc7d0072de32290fd0e60 Reviewed-on: https://dart-review.googlesource.com/c/84140 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Régis Crelier <regis@google.com>
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/globals.h"
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#if defined(TARGET_ARCH_IA32)
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#include "vm/runtime_entry.h"
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#include "vm/compiler/assembler/assembler.h"
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#include "vm/stub_code.h"
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namespace dart {
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#define __ assembler->
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uword RuntimeEntry::GetEntryPoint() const {
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return reinterpret_cast<uword>(function());
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}
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#if !defined(DART_PRECOMPILED_RUNTIME)
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// Generate code to call into the stub which will call the runtime
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// function. Input for the stub is as follows:
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// For regular runtime calls -
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// ESP : points to the arguments and return value array.
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// ECX : address of the runtime function to call.
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// EDX : number of arguments to the call as Smi.
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// For leaf calls the caller is responsible to setup the arguments
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// and look for return values based on the C calling convention.
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void RuntimeEntry::Call(Assembler* assembler, intptr_t argument_count) const {
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if (is_leaf()) {
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ASSERT(argument_count == this->argument_count());
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__ movl(EAX, Immediate(GetEntryPoint()));
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__ movl(Assembler::VMTagAddress(), EAX);
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__ call(EAX);
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__ movl(Assembler::VMTagAddress(), Immediate(VMTag::kDartCompiledTagId));
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} else {
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// Argument count is not checked here, but in the runtime entry for a more
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// informative error message.
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__ movl(ECX, Immediate(GetEntryPoint()));
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__ movl(EDX, Immediate(argument_count));
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__ CallToRuntime();
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}
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}
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#endif // !defined(DART_PRECOMPILED_RUNTIME)
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} // namespace dart
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#endif // defined TARGET_ARCH_IA32
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