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// Copyright (c) 2013, 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_MIPS)
#include "vm/runtime_entry.h"
#include "vm/assembler.h"
#include "vm/simulator.h"
#include "vm/stub_code.h"
namespace dart {
#define __ assembler->
// Generate code to call into the stub which will call the runtime
// function. Input for the stub is as follows:
// SP : points to the arguments and return value array.
// S5 : address of the runtime function to call.
// S4 : number of arguments to the call.
void RuntimeEntry::Call(Assembler* assembler) const {
// Compute the effective address. When running under the simulator,
// this is a redirection address that forces the simulator to call
// into the runtime system.
uword entry = GetEntryPoint();
#if defined(USING_SIMULATOR)
// Redirection to leaf runtime calls supports a maximum of 4 arguments passed
// in registers.
ASSERT(!is_leaf() || (argument_count() <= 4));
Simulator::CallKind call_kind =
is_leaf() ? Simulator::kLeafRuntimeCall : Simulator::kRuntimeCall;
entry = Simulator::RedirectExternalReference(entry, call_kind);
#endif
if (is_leaf()) {
ExternalLabel label(name(), entry);
__ BranchLink(&label);
} else {
__ LoadImmediate(S5, entry);
__ LoadImmediate(S4, argument_count());
__ BranchLink(&StubCode::CallToRuntimeLabel());
}
}
} // namespace dart
#endif // defined TARGET_ARCH_MIPS