| // 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/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::Call(Assembler* assembler, intptr_t argument_count) const { |
| if (is_leaf()) { |
| ASSERT(argument_count == this->argument_count()); |
| ExternalLabel label(GetEntryPoint()); |
| __ call(&label); |
| } else { |
| // Argument count is not checked here, but in the runtime entry for a more |
| // informative error message. |
| __ movl(ECX, Immediate(GetEntryPoint())); |
| __ movl(EDX, Immediate(argument_count)); |
| __ Call(*StubCode::CallToRuntime_entry()); |
| } |
| } |
| |
| } // namespace dart |
| |
| #endif // defined TARGET_ARCH_IA32 |