regis@google.com
8171570100
a runtime entry in the VM. R=asiva@google.com Review URL: https://codereview.chromium.org//23672011 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@26826 260f80e4-7a28-3924-810f-c04153c831b5
43 lines
1.3 KiB
C++
43 lines
1.3 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/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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// 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.
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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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ExternalLabel label(name(), GetEntryPoint());
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__ call(&label);
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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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__ call(&StubCode::CallToRuntimeLabel());
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}
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}
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} // namespace dart
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#endif // defined TARGET_ARCH_IA32
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