blob: 425529c3ff778080eff7f5fb13940d45580fcd71 [file] [log] [blame]
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "vm/globals.h"
#if defined(TARGET_ARCH_IA32)
#include "vm/runtime_entry.h"
#include "vm/compiler/assembler/assembler.h"
#include "vm/stub_code.h"
namespace dart {
#define __ assembler->
uword RuntimeEntry::GetEntryPoint() const {
return reinterpret_cast<uword>(function());
// Generate code to call into the stub which will call the runtime
// function. Input for the stub is as follows:
// For regular runtime calls -
// ESP : points to the arguments and return value array.
// ECX : address of the runtime function to call.
// EDX : number of arguments to the call as Smi.
// For leaf calls the caller is responsible to setup the arguments
// and look for return values based on the C calling convention.
void RuntimeEntry::CallInternal(const RuntimeEntry* runtime_entry,
Assembler* assembler,
intptr_t argument_count) {
if (runtime_entry->is_leaf()) {
ASSERT(argument_count == runtime_entry->argument_count());
__ movl(EAX, Immediate(runtime_entry->GetEntryPoint()));
__ movl(Assembler::VMTagAddress(), EAX);
__ call(EAX);
__ movl(Assembler::VMTagAddress(), Immediate(VMTag::kDartCompiledTagId));
} else {
// Argument count is not checked here, but in the runtime entry for a more
// informative error message.
__ movl(ECX, Immediate(runtime_entry->GetEntryPoint()));
__ movl(EDX, Immediate(argument_count));
__ CallToRuntime();
#endif // !defined(DART_PRECOMPILED_RUNTIME)
} // namespace dart
#endif // defined TARGET_ARCH_IA32