duke@435: /*
xdono@772:  * Copyright 1998-2008 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: #include "incls/_precompiled.incl"
duke@435: #include "incls/_interpreterRT_x86_32.cpp.incl"
duke@435: 
duke@435: 
duke@435: #define __ _masm->
duke@435: 
duke@435: 
duke@435: // Implementation of SignatureHandlerGenerator
duke@435: void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {
duke@435:   move(offset(), jni_offset() + 1);
duke@435: }
duke@435: 
duke@435: void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
duke@435:    move(offset(), jni_offset() + 2);
duke@435:    move(offset() + 1, jni_offset() + 1);
duke@435: }
duke@435: 
duke@435: void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
duke@435:   box (offset(), jni_offset() + 1);
duke@435: }
duke@435: 
duke@435: void InterpreterRuntime::SignatureHandlerGenerator::move(int from_offset, int to_offset) {
duke@435:   __ movl(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
duke@435:   __ movl(Address(to(), to_offset * wordSize), temp());
duke@435: }
duke@435: 
duke@435: 
duke@435: void InterpreterRuntime::SignatureHandlerGenerator::box(int from_offset, int to_offset) {
never@739:   __ lea(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
never@739:   __ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), (int32_t)NULL_WORD); // do not use temp() to avoid AGI
duke@435:   Label L;
duke@435:   __ jcc(Assembler::notZero, L);
never@739:   __ movptr(temp(), ((int32_t)NULL_WORD));
duke@435:   __ bind(L);
never@739:   __ movptr(Address(to(), to_offset * wordSize), temp());
duke@435: }
duke@435: 
duke@435: 
duke@435: void InterpreterRuntime::SignatureHandlerGenerator::generate( uint64_t fingerprint) {
duke@435:   // generate code to handle arguments
duke@435:   iterate(fingerprint);
duke@435:   // return result handler
duke@435:   __ lea(rax,
duke@435:          ExternalAddress((address)Interpreter::result_handler(method()->result_type())));
duke@435:   // return
duke@435:   __ ret(0);
duke@435:   __ flush();
duke@435: }
duke@435: 
duke@435: 
duke@435: Register InterpreterRuntime::SignatureHandlerGenerator::from()       { return rdi; }
duke@435: Register InterpreterRuntime::SignatureHandlerGenerator::to()         { return rsp; }
duke@435: Register InterpreterRuntime::SignatureHandlerGenerator::temp()       { return rcx; }
duke@435: 
duke@435: 
duke@435: // Implementation of SignatureHandlerLibrary
duke@435: 
duke@435: void SignatureHandlerLibrary::pd_set_handler(address handler) {}
duke@435: 
duke@435: class SlowSignatureHandler: public NativeSignatureIterator {
duke@435:  private:
duke@435:   address   _from;
duke@435:   intptr_t* _to;
duke@435: 
duke@435: #ifdef ASSERT
duke@435:   void verify_tag(frame::Tag t) {
duke@435:     assert(!TaggedStackInterpreter ||
duke@435:            *(intptr_t*)(_from+Interpreter::local_tag_offset_in_bytes(0)) == t, "wrong tag");
duke@435:   }
duke@435: #endif // ASSERT
duke@435: 
duke@435:   virtual void pass_int() {
duke@435:     *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
duke@435:     debug_only(verify_tag(frame::TagValue));
duke@435:     _from -= Interpreter::stackElementSize();
duke@435:   }
duke@435: 
duke@435:   virtual void pass_long() {
duke@435:     _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
duke@435:     _to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0));
duke@435:     debug_only(verify_tag(frame::TagValue));
duke@435:     _to += 2;
duke@435:     _from -= 2*Interpreter::stackElementSize();
duke@435:   }
duke@435: 
duke@435:   virtual void pass_object() {
duke@435:     // pass address of from
duke@435:     intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0));
duke@435:     *_to++ = (*(intptr_t*)from_addr == 0) ? NULL : from_addr;
duke@435:     debug_only(verify_tag(frame::TagReference));
duke@435:     _from -= Interpreter::stackElementSize();
duke@435:    }
duke@435: 
duke@435:  public:
duke@435:   SlowSignatureHandler(methodHandle method, address from, intptr_t* to) :
duke@435:     NativeSignatureIterator(method) {
duke@435:     _from = from;
duke@435:     _to   = to + (is_static() ? 2 : 1);
duke@435:   }
duke@435: };
duke@435: 
duke@435: IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(JavaThread* thread, methodOopDesc* method, intptr_t* from, intptr_t* to))
duke@435:   methodHandle m(thread, (methodOop)method);
duke@435:   assert(m->is_native(), "sanity check");
duke@435:   // handle arguments
duke@435:   SlowSignatureHandler(m, (address)from, to + 1).iterate(UCONST64(-1));
duke@435:   // return result handler
duke@435:   return Interpreter::result_handler(m->result_type());
duke@435: IRT_END