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/*
* Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
* Copyright 2007, 2008 Red Hat, Inc.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
class SignatureHandler {
public:
static SignatureHandler *from_handlerAddr(address handlerAddr) {
return (SignatureHandler *) handlerAddr;
}
public:
ffi_cif* cif() const {
return (ffi_cif *) this;
}
int argument_count() const {
return cif()->nargs;
}
ffi_type** argument_types() const {
return (ffi_type**) (cif() + 1);
}
ffi_type* argument_type(int i) const {
return argument_types()[i];
}
ffi_type* result_type() const {
return *(argument_types() + argument_count());
}
protected:
friend class InterpreterRuntime;
friend class SignatureHandlerLibrary;
void finalize();
};
class SignatureHandlerGeneratorBase : public NativeSignatureIterator {
private:
ffi_cif* _cif;
protected:
SignatureHandlerGeneratorBase(methodHandle method, ffi_cif *cif)
: NativeSignatureIterator(method), _cif(cif) {
_cif->nargs = 0;
}
ffi_cif *cif() const {
return _cif;
}
public:
void generate(uint64_t fingerprint);
private:
void pass_int();
void pass_long();
void pass_float();
void pass_double();
void pass_object();
private:
void push(BasicType type);
virtual void push(intptr_t value) = 0;
};
class SignatureHandlerGenerator : public SignatureHandlerGeneratorBase {
private:
CodeBuffer* _cb;
public:
SignatureHandlerGenerator(methodHandle method, CodeBuffer* buffer)
: SignatureHandlerGeneratorBase(method, (ffi_cif *) buffer->code_end()),
_cb(buffer) {
_cb->set_code_end((address) (cif() + 1));
}
private:
void push(intptr_t value) {
intptr_t *dst = (intptr_t *) _cb->code_end();
_cb->set_code_end((address) (dst + 1));
*dst = value;
}
};
class SlowSignatureHandlerGenerator : public SignatureHandlerGeneratorBase {
private:
intptr_t *_dst;
public:
SlowSignatureHandlerGenerator(methodHandle method, intptr_t* buf)
: SignatureHandlerGeneratorBase(method, (ffi_cif *) buf) {
_dst = (intptr_t *) (cif() + 1);
}
private:
void push(intptr_t value) {
*(_dst++) = value;
}
public:
SignatureHandler *handler() const {
return (SignatureHandler *) cif();
}
};
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