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/*
* Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 2007, 2008, 2010 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
#include "incls/_precompiled.incl"
#include "incls/_interpreterRT_zero.cpp.incl"
void InterpreterRuntime::SignatureHandlerGeneratorBase::pass_int() {
push(T_INT);
_cif->nargs++;
}
void InterpreterRuntime::SignatureHandlerGeneratorBase::pass_long() {
push(T_LONG);
_cif->nargs++;
}
void InterpreterRuntime::SignatureHandlerGeneratorBase::pass_float() {
push(T_FLOAT);
_cif->nargs++;
}
void InterpreterRuntime::SignatureHandlerGeneratorBase::pass_double() {
push(T_DOUBLE);
_cif->nargs++;
}
void InterpreterRuntime::SignatureHandlerGeneratorBase::pass_object() {
push(T_OBJECT);
_cif->nargs++;
}
void InterpreterRuntime::SignatureHandlerGeneratorBase::push(BasicType type) {
ffi_type *ftype;
switch (type) {
case T_VOID:
ftype = &ffi_type_void;
break;
case T_BOOLEAN:
ftype = &ffi_type_uint8;
break;
case T_CHAR:
ftype = &ffi_type_uint16;
break;
case T_BYTE:
ftype = &ffi_type_sint8;
break;
case T_SHORT:
ftype = &ffi_type_sint16;
break;
case T_INT:
ftype = &ffi_type_sint32;
break;
case T_LONG:
ftype = &ffi_type_sint64;
break;
case T_FLOAT:
ftype = &ffi_type_float;
break;
case T_DOUBLE:
ftype = &ffi_type_double;
break;
case T_OBJECT:
case T_ARRAY:
ftype = &ffi_type_pointer;
break;
default:
ShouldNotReachHere();
}
push((intptr_t) ftype);
}
// For fast signature handlers the "signature handler" is generated
// into a temporary buffer. It is then copied to its final location,
// and pd_set_handler is called on it. We have this two stage thing
// to accomodate this.
void InterpreterRuntime::SignatureHandlerGeneratorBase::generate(
uint64_t fingerprint) {
// Build the argument types list
pass_object();
if (method()->is_static())
pass_object();
iterate(fingerprint);
// Tack on the result type
push(method()->result_type());
}
void InterpreterRuntime::SignatureHandler::finalize() {
ffi_status status =
ffi_prep_cif(cif(),
FFI_DEFAULT_ABI,
argument_count(),
result_type(),
argument_types());
assert(status == FFI_OK, "should be");
}
IRT_ENTRY(address,
InterpreterRuntime::slow_signature_handler(JavaThread* thread,
methodOop method,
intptr_t* unused1,
intptr_t* unused2))
ZeroStack *stack = thread->zero_stack();
int required_words =
(align_size_up(sizeof(ffi_cif), wordSize) >> LogBytesPerWord) +
(method->is_static() ? 2 : 1) + method->size_of_parameters() + 1;
stack->overflow_check(required_words, CHECK_NULL);
intptr_t *buf = (intptr_t *) stack->alloc(required_words * wordSize);
SlowSignatureHandlerGenerator sshg(methodHandle(thread, method), buf);
sshg.generate(UCONST64(-1));
SignatureHandler *handler = sshg.handler();
handler->finalize();
return (address) handler;
IRT_END
void SignatureHandlerLibrary::pd_set_handler(address handlerAddr) {
InterpreterRuntime::SignatureHandler *handler =
InterpreterRuntime::SignatureHandler::from_handlerAddr(handlerAddr);
handler->finalize();
}
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