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/*
* Copyright 1998-2008 Sun Microsystems, Inc. All Rights Reserved.
* 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_x86_32.cpp.incl"
#define __ _masm->
// Implementation of SignatureHandlerGenerator
void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {
move(offset(), jni_offset() + 1);
}
void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
move(offset(), jni_offset() + 2);
move(offset() + 1, jni_offset() + 1);
}
void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
box (offset(), jni_offset() + 1);
}
void InterpreterRuntime::SignatureHandlerGenerator::move(int from_offset, int to_offset) {
__ movl(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
__ movl(Address(to(), to_offset * wordSize), temp());
}
void InterpreterRuntime::SignatureHandlerGenerator::box(int from_offset, int to_offset) {
__ lea(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
__ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), (int32_t)NULL_WORD); // do not use temp() to avoid AGI
Label L;
__ jcc(Assembler::notZero, L);
__ movptr(temp(), NULL_WORD);
__ bind(L);
__ movptr(Address(to(), to_offset * wordSize), temp());
}
void InterpreterRuntime::SignatureHandlerGenerator::generate( uint64_t fingerprint) {
// generate code to handle arguments
iterate(fingerprint);
// return result handler
__ lea(rax,
ExternalAddress((address)Interpreter::result_handler(method()->result_type())));
// return
__ ret(0);
__ flush();
}
Register InterpreterRuntime::SignatureHandlerGenerator::from() { return rdi; }
Register InterpreterRuntime::SignatureHandlerGenerator::to() { return rsp; }
Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rcx; }
// Implementation of SignatureHandlerLibrary
void SignatureHandlerLibrary::pd_set_handler(address handler) {}
class SlowSignatureHandler: public NativeSignatureIterator {
private:
address _from;
intptr_t* _to;
#ifdef ASSERT
void verify_tag(frame::Tag t) {
assert(!TaggedStackInterpreter ||
*(intptr_t*)(_from+Interpreter::local_tag_offset_in_bytes(0)) == t, "wrong tag");
}
#endif // ASSERT
virtual void pass_int() {
*_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
debug_only(verify_tag(frame::TagValue));
_from -= Interpreter::stackElementSize();
}
virtual void pass_long() {
_to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
_to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0));
debug_only(verify_tag(frame::TagValue));
_to += 2;
_from -= 2*Interpreter::stackElementSize();
}
virtual void pass_object() {
// pass address of from
intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0));
*_to++ = (*(intptr_t*)from_addr == 0) ? NULL_WORD : from_addr;
debug_only(verify_tag(frame::TagReference));
_from -= Interpreter::stackElementSize();
}
public:
SlowSignatureHandler(methodHandle method, address from, intptr_t* to) :
NativeSignatureIterator(method) {
_from = from;
_to = to + (is_static() ? 2 : 1);
}
};
IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(JavaThread* thread, methodOopDesc* method, intptr_t* from, intptr_t* to))
methodHandle m(thread, (methodOop)method);
assert(m->is_native(), "sanity check");
// handle arguments
SlowSignatureHandler(m, (address)from, to + 1).iterate(UCONST64(-1));
// return result handler
return Interpreter::result_handler(m->result_type());
IRT_END
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