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 */ 24 25 #include "incls/_precompiled.incl" 26 #include "incls/_interpreterRT_x86_32.cpp.incl" 27 28 29 #define __ _masm-> 30 31 32 // Implementation of SignatureHandlerGenerator 33 void InterpreterRuntime::SignatureHandlerGenerator::pass_int() { 34 move(offset(), jni_offset() + 1); 35 } 36 37 void InterpreterRuntime::SignatureHandlerGenerator::pass_float() { 38 move(offset(), jni_offset() + 1); 39 } 40 41 void InterpreterRuntime::SignatureHandlerGenerator::pass_long() { 42 move(offset(), jni_offset() + 2); 43 move(offset() + 1, jni_offset() + 1); 44 } 45 46 void InterpreterRuntime::SignatureHandlerGenerator::pass_object() { 47 box (offset(), jni_offset() + 1); 48 } 49 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 } 54 55 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 } 65 66 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 } 77 78 79 Register InterpreterRuntime::SignatureHandlerGenerator::from() { return rdi; } 80 Register InterpreterRuntime::SignatureHandlerGenerator::to() { return rsp; } 81 Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rcx; } 82 83 84 // Implementation of SignatureHandlerLibrary 85 86 void SignatureHandlerLibrary::pd_set_handler(address handler) {} 87 88 class SlowSignatureHandler: public NativeSignatureIterator { 89 private: 90 address _from; 91 intptr_t* _to; 92 93 virtual void pass_int() { 94 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); 95 _from -= Interpreter::stackElementSize; 96 } 97 98 virtual void pass_float() { 99 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); 100 _from -= Interpreter::stackElementSize; 101 } 102 103 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 } 109 110 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 } 116 117 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 }; 124 125 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