duke@435: /*
trims@1907:  * Copyright (c) 1998, 2010, Oracle and/or its affiliates. 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:  *
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.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "interpreter/interpreter.hpp"
stefank@2314: #include "interpreter/interpreterRuntime.hpp"
stefank@2314: #include "memory/allocation.inline.hpp"
stefank@2314: #include "memory/universe.inline.hpp"
stefank@2314: #include "oops/methodOop.hpp"
stefank@2314: #include "oops/oop.inline.hpp"
stefank@2314: #include "runtime/handles.inline.hpp"
stefank@2314: #include "runtime/icache.hpp"
stefank@2314: #include "runtime/interfaceSupport.hpp"
stefank@2314: #include "runtime/signature.hpp"
duke@435: 
duke@435: 
duke@435: #define __ _masm->
duke@435: 
duke@435: 
duke@435: // Implementation of SignatureHandlerGenerator
duke@435: 
duke@435: void InterpreterRuntime::SignatureHandlerGenerator::pass_word(int size_of_arg, int offset_in_arg) {
duke@435:   Argument  jni_arg(jni_offset() + offset_in_arg, false);
duke@435:   Register     Rtmp = O0;
duke@435:   __ ld(Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
duke@435: 
duke@435:   __ store_argument(Rtmp, jni_arg);
duke@435: }
duke@435: 
duke@435: void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
duke@435:   Argument  jni_arg(jni_offset(), false);
duke@435:   Register  Rtmp = O0;
duke@435: 
duke@435: #ifdef _LP64
duke@435:   __ ldx(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
duke@435:   __ store_long_argument(Rtmp, jni_arg);
duke@435: #else
duke@435:   __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
duke@435:   __ store_argument(Rtmp, jni_arg);
duke@435:   __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 0), Rtmp);
duke@435:   Argument successor(jni_arg.successor());
duke@435:   __ store_argument(Rtmp, successor);
duke@435: #endif
duke@435: }
duke@435: 
duke@435: 
duke@435: void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
duke@435:   Argument  jni_arg(jni_offset(), false);
bobv@2036: #ifdef _LP64
duke@435:   FloatRegister  Rtmp = F0;
duke@435:   __ ldf(FloatRegisterImpl::S, Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
duke@435:   __ store_float_argument(Rtmp, jni_arg);
bobv@2036: #else
bobv@2036:   Register     Rtmp = O0;
bobv@2036:   __ ld(Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
bobv@2036:   __ store_argument(Rtmp, jni_arg);
bobv@2036: #endif
duke@435: }
duke@435: 
duke@435: 
duke@435: void InterpreterRuntime::SignatureHandlerGenerator::pass_double() {
duke@435:   Argument  jni_arg(jni_offset(), false);
duke@435: #ifdef _LP64
duke@435:   FloatRegister  Rtmp = F0;
duke@435:   __ ldf(FloatRegisterImpl::D, Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
duke@435:   __ store_double_argument(Rtmp, jni_arg);
duke@435: #else
duke@435:   Register  Rtmp = O0;
duke@435:   __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
duke@435:   __ store_argument(Rtmp, jni_arg);
duke@435:   __ ld(Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
duke@435:   Argument successor(jni_arg.successor());
duke@435:   __ store_argument(Rtmp, successor);
duke@435: #endif
duke@435: }
duke@435: 
duke@435: void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
duke@435:   Argument  jni_arg(jni_offset(), false);
duke@435:   Argument java_arg(    offset(), true);
duke@435:   Register    Rtmp1 = O0;
duke@435:   Register    Rtmp2 =  jni_arg.is_register() ?  jni_arg.as_register() : O0;
duke@435:   Register    Rtmp3 =  G3_scratch;
duke@435: 
duke@435:   // the handle for a receiver will never be null
duke@435:   bool do_NULL_check = offset() != 0 || is_static();
duke@435: 
twisti@1162:   Address     h_arg = Address(Llocals, Interpreter::local_offset_in_bytes(offset()));
duke@435:   __ ld_ptr(h_arg, Rtmp1);
duke@435:   if (!do_NULL_check) {
twisti@1162:     __ add(h_arg.base(), h_arg.disp(), Rtmp2);
duke@435:   } else {
duke@435:     if (Rtmp1 == Rtmp2)
duke@435:           __ tst(Rtmp1);
duke@435:     else  __ addcc(G0, Rtmp1, Rtmp2); // optimize mov/test pair
duke@435:     Label L;
duke@435:     __ brx(Assembler::notZero, true, Assembler::pt, L);
twisti@1162:     __ delayed()->add(h_arg.base(), h_arg.disp(), Rtmp2);
duke@435:     __ bind(L);
duke@435:   }
duke@435:   __ store_ptr_argument(Rtmp2, jni_arg);    // this is often a no-op
duke@435: }
duke@435: 
duke@435: 
duke@435: void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) {
duke@435: 
duke@435:   // generate code to handle arguments
duke@435:   iterate(fingerprint);
duke@435: 
duke@435:   // return result handler
twisti@1162:   AddressLiteral result_handler(Interpreter::result_handler(method()->result_type()));
twisti@1162:   __ sethi(result_handler, Lscratch);
duke@435:   __ retl();
twisti@1162:   __ delayed()->add(Lscratch, result_handler.low10(), Lscratch);
duke@435: 
duke@435:   __ flush();
duke@435: }
duke@435: 
duke@435: 
duke@435: // Implementation of SignatureHandlerLibrary
duke@435: 
duke@435: void SignatureHandlerLibrary::pd_set_handler(address handler) {}
duke@435: 
duke@435: 
duke@435: class SlowSignatureHandler: public NativeSignatureIterator {
duke@435:  private:
duke@435:   address   _from;
duke@435:   intptr_t* _to;
duke@435:   intptr_t* _RegArgSignature;                   // Signature of first Arguments to be passed in Registers
duke@435:   uint      _argcount;
duke@435: 
duke@435:   enum {                                        // We need to differenciate float from non floats in reg args
duke@435:     non_float  = 0,
duke@435:     float_sig  = 1,
duke@435:     double_sig = 2,
duke@435:     long_sig   = 3
duke@435:   };
duke@435: 
duke@435:   virtual void pass_int() {
duke@435:     *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
twisti@1861:     _from -= Interpreter::stackElementSize;
duke@435:     add_signature( non_float );
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++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
twisti@1861:     _from -= Interpreter::stackElementSize;
duke@435:     add_signature( non_float );
duke@435:    }
duke@435: 
duke@435: #ifdef _LP64
duke@435:   virtual void pass_float()  {
duke@435:     *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
twisti@1861:     _from -= Interpreter::stackElementSize;
duke@435:     add_signature( float_sig );
duke@435:    }
duke@435: 
duke@435:   virtual void pass_double() {
duke@435:     *_to++ = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
twisti@1861:     _from -= 2*Interpreter::stackElementSize;
duke@435:    add_signature( double_sig );
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;
twisti@1861:     _from -= 2*Interpreter::stackElementSize;
duke@435:     add_signature( long_sig );
duke@435:   }
duke@435: #else
duke@435:    // pass_double() is pass_long() and pass_float() only _LP64
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:     _to += 2;
twisti@1861:     _from -= 2*Interpreter::stackElementSize;
duke@435:     add_signature( non_float );
duke@435:   }
bobv@2036: 
bobv@2036:   virtual void pass_float() {
bobv@2036:     *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
bobv@2036:     _from -= Interpreter::stackElementSize;
bobv@2036:     add_signature( non_float );
bobv@2036:   }
bobv@2036: 
duke@435: #endif // _LP64
duke@435: 
duke@435:   virtual void add_signature( intptr_t sig_type ) {
duke@435:     if ( _argcount < (sizeof (intptr_t))*4 ) {
duke@435:       *_RegArgSignature |= (sig_type << (_argcount*2) );
duke@435:       _argcount++;
duke@435:     }
duke@435:   }
duke@435: 
duke@435: 
duke@435:  public:
duke@435:   SlowSignatureHandler(methodHandle method, address from, intptr_t* to, intptr_t *RegArgSig) : NativeSignatureIterator(method) {
duke@435:     _from = from;
duke@435:     _to   = to;
duke@435:     _RegArgSignature = RegArgSig;
duke@435:     *_RegArgSignature = 0;
duke@435:     _argcount = method->is_static() ? 2 : 1;
duke@435:   }
duke@435: };
duke@435: 
duke@435: 
duke@435: IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(
duke@435:                                                     JavaThread* thread,
duke@435:                                                     methodOopDesc* method,
duke@435:                                                     intptr_t* from,
duke@435:                                                     intptr_t* to ))
duke@435:   methodHandle m(thread, method);
duke@435:   assert(m->is_native(), "sanity check");
duke@435:   // handle arguments
duke@435:   // Warning: We use reg arg slot 00 temporarily to return the RegArgSignature
duke@435:   // back to the code that pops the arguments into the CPU registers
duke@435:   SlowSignatureHandler(m, (address)from, m->is_static() ? to+2 : to+1, to).iterate(UCONST64(-1));
duke@435:   // return result handler
duke@435:   return Interpreter::result_handler(m->result_type());
duke@435: IRT_END