never@1445: /*
stefank@2314:  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
never@1445:  * Copyright 2007, 2008 Red Hat, Inc.
never@1445:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@1445:  *
never@1445:  * This code is free software; you can redistribute it and/or modify it
never@1445:  * under the terms of the GNU General Public License version 2 only, as
never@1445:  * published by the Free Software Foundation.
never@1445:  *
never@1445:  * This code is distributed in the hope that it will be useful, but WITHOUT
never@1445:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@1445:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
never@1445:  * version 2 for more details (a copy is included in the LICENSE file that
never@1445:  * accompanied this code).
never@1445:  *
never@1445:  * You should have received a copy of the GNU General Public License version
never@1445:  * 2 along with this work; if not, write to the Free Software Foundation,
never@1445:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@1445:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
never@1445:  *
never@1445:  */
never@1445: 
stefank@2314: #ifndef CPU_ZERO_VM_INTERPRETERRT_ZERO_HPP
stefank@2314: #define CPU_ZERO_VM_INTERPRETERRT_ZERO_HPP
stefank@2314: 
stefank@2314: #include "memory/allocation.hpp"
stefank@2314: 
never@1445: class SignatureHandler {
never@1445:  public:
never@1445:   static SignatureHandler *from_handlerAddr(address handlerAddr) {
never@1445:     return (SignatureHandler *) handlerAddr;
never@1445:   }
never@1445: 
never@1445:  public:
never@1445:   ffi_cif* cif() const {
never@1445:     return (ffi_cif *) this;
never@1445:   }
never@1445: 
never@1445:   int argument_count() const {
never@1445:     return cif()->nargs;
never@1445:   }
never@1445: 
never@1445:   ffi_type** argument_types() const {
never@1445:     return (ffi_type**) (cif() + 1);
never@1445:   }
never@1445: 
never@1445:   ffi_type* argument_type(int i) const {
never@1445:     return argument_types()[i];
never@1445:   }
never@1445: 
never@1445:   ffi_type* result_type() const {
never@1445:     return *(argument_types() + argument_count());
never@1445:   }
never@1445: 
never@1445:  protected:
never@1445:   friend class InterpreterRuntime;
never@1445:   friend class SignatureHandlerLibrary;
never@1445: 
never@1445:   void finalize();
never@1445: };
never@1445: 
never@1445: class SignatureHandlerGeneratorBase : public NativeSignatureIterator {
never@1445:  private:
never@1445:   ffi_cif* _cif;
never@1445: 
never@1445:  protected:
never@1445:   SignatureHandlerGeneratorBase(methodHandle method, ffi_cif *cif)
never@1445:     : NativeSignatureIterator(method), _cif(cif) {
never@1445:     _cif->nargs = 0;
never@1445:   }
never@1445: 
never@1445:   ffi_cif *cif() const {
never@1445:     return _cif;
never@1445:   }
never@1445: 
never@1445:  public:
never@1445:   void generate(uint64_t fingerprint);
never@1445: 
never@1445:  private:
never@1445:   void pass_int();
never@1445:   void pass_long();
never@1445:   void pass_float();
never@1445:   void pass_double();
never@1445:   void pass_object();
never@1445: 
never@1445:  private:
never@1445:   void push(BasicType type);
never@1445:   virtual void push(intptr_t value) = 0;
never@1445: };
never@1445: 
never@1445: class SignatureHandlerGenerator : public SignatureHandlerGeneratorBase {
never@1445:  private:
never@1445:   CodeBuffer* _cb;
never@1445: 
never@1445:  public:
never@1445:   SignatureHandlerGenerator(methodHandle method, CodeBuffer* buffer)
twisti@2200:     : SignatureHandlerGeneratorBase(method, (ffi_cif *) buffer->insts_end()),
never@1445:       _cb(buffer) {
twisti@2200:     _cb->set_insts_end((address) (cif() + 1));
never@1445:   }
never@1445: 
never@1445:  private:
never@1445:   void push(intptr_t value) {
twisti@2200:     intptr_t *dst = (intptr_t *) _cb->insts_end();
twisti@2200:     _cb->set_insts_end((address) (dst + 1));
never@1445:     *dst = value;
never@1445:   }
never@1445: };
never@1445: 
never@1445: class SlowSignatureHandlerGenerator : public SignatureHandlerGeneratorBase {
never@1445:  private:
never@1445:   intptr_t *_dst;
never@1445: 
never@1445:  public:
never@1445:   SlowSignatureHandlerGenerator(methodHandle method, intptr_t* buf)
never@1445:     : SignatureHandlerGeneratorBase(method, (ffi_cif *) buf) {
never@1445:     _dst = (intptr_t *) (cif() + 1);
never@1445:   }
never@1445: 
never@1445:  private:
never@1445:   void push(intptr_t value) {
never@1445:     *(_dst++) = value;
never@1445:   }
never@1445: 
never@1445:  public:
never@1445:   SignatureHandler *handler() const {
never@1445:     return (SignatureHandler *) cif();
never@1445:   }
never@1445: };
stefank@2314: 
stefank@2314: #endif // CPU_ZERO_VM_INTERPRETERRT_ZERO_HPP