jdk8-mips64-public/hotspot: src/cpu/x86/vm/interpreterRT_x86

     1 /*

     2  * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "incls/_precompiled.incl"

    26 #include "incls/_interpreterRT_x86_32.cpp.incl"

    29 #define __ _masm->

    32 // Implementation of SignatureHandlerGenerator

    33 void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {

    34   move(offset(), jni_offset() + 1);

    35 }

    37 void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {

    38   move(offset(), jni_offset() + 1);

    39 }

    41 void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {

    42    move(offset(), jni_offset() + 2);

    43    move(offset() + 1, jni_offset() + 1);

    44 }

    46 void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {

    47   box (offset(), jni_offset() + 1);

    48 }

    50 void InterpreterRuntime::SignatureHandlerGenerator::move(int from_offset, int to_offset) {

    51   __ movl(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));

    52   __ movl(Address(to(), to_offset * wordSize), temp());

    53 }

    56 void InterpreterRuntime::SignatureHandlerGenerator::box(int from_offset, int to_offset) {

    57   __ lea(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));

    58   __ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), (int32_t)NULL_WORD); // do not use temp() to avoid AGI

    59   Label L;

    60   __ jcc(Assembler::notZero, L);

    61   __ movptr(temp(), NULL_WORD);

    62   __ bind(L);

    63   __ movptr(Address(to(), to_offset * wordSize), temp());

    64 }

    67 void InterpreterRuntime::SignatureHandlerGenerator::generate( uint64_t fingerprint) {

    68   // generate code to handle arguments

    69   iterate(fingerprint);

    70   // return result handler

    71   __ lea(rax,

    72          ExternalAddress((address)Interpreter::result_handler(method()->result_type())));

    73   // return

    74   __ ret(0);

    75   __ flush();

    76 }

    79 Register InterpreterRuntime::SignatureHandlerGenerator::from()       { return rdi; }

    80 Register InterpreterRuntime::SignatureHandlerGenerator::to()         { return rsp; }

    81 Register InterpreterRuntime::SignatureHandlerGenerator::temp()       { return rcx; }

    84 // Implementation of SignatureHandlerLibrary

    86 void SignatureHandlerLibrary::pd_set_handler(address handler) {}

    88 class SlowSignatureHandler: public NativeSignatureIterator {

    89  private:

    90   address   _from;

    91   intptr_t* _to;

    93   virtual void pass_int() {

    94     *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));

    95     _from -= Interpreter::stackElementSize;

    96   }

    98   virtual void pass_float() {

    99     *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));

   100     _from -= Interpreter::stackElementSize;

   101   }

   103   virtual void pass_long() {

   104     _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));

   105     _to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0));

   106     _to += 2;

   107     _from -= 2*Interpreter::stackElementSize;

   108   }

   110   virtual void pass_object() {

   111     // pass address of from

   112     intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0));

   113     *_to++ = (*(intptr_t*)from_addr == 0) ? NULL_WORD : from_addr;

   114     _from -= Interpreter::stackElementSize;

   115    }

   117  public:

   118   SlowSignatureHandler(methodHandle method, address from, intptr_t* to) :

   119     NativeSignatureIterator(method) {

   120     _from = from;

   121     _to   = to + (is_static() ? 2 : 1);

   122   }

   123 };

   125 IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(JavaThread* thread, methodOopDesc* method, intptr_t* from, intptr_t* to))

   126   methodHandle m(thread, (methodOop)method);

   127   assert(m->is_native(), "sanity check");

   128   // handle arguments

   129   SlowSignatureHandler(m, (address)from, to + 1).iterate(UCONST64(-1));

   130   // return result handler

   131   return Interpreter::result_handler(m->result_type());

   132 IRT_END

src/cpu/x86/vm/interpreterRT_x86_32.cpp@75b0735b4d04