1 /* 2 * Copyright (c) 1998, 2005, 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 // native method calls 26 27 class SignatureHandlerGenerator: public NativeSignatureIterator { 28 private: 29 MacroAssembler* _masm; 30 #ifdef AMD64 31 #ifdef _WIN64 32 unsigned int _num_args; 33 #else 34 unsigned int _num_fp_args; 35 unsigned int _num_int_args; 36 #endif // _WIN64 37 int _stack_offset; 38 #else 39 void move(int from_offset, int to_offset); 40 void box(int from_offset, int to_offset); 41 #endif // AMD64 42 43 void pass_int(); 44 void pass_long(); 45 void pass_float(); 46 #ifdef AMD64 47 void pass_double(); 48 #endif // AMD64 49 void pass_object(); 50 51 public: 52 // Creation 53 SignatureHandlerGenerator(methodHandle method, CodeBuffer* buffer) : NativeSignatureIterator(method) { 54 _masm = new MacroAssembler(buffer); 55 #ifdef AMD64 56 #ifdef _WIN64 57 _num_args = (method->is_static() ? 1 : 0); 58 _stack_offset = (Argument::n_int_register_parameters_c+1)* wordSize; // don't overwrite return address 59 #else 60 _num_int_args = (method->is_static() ? 1 : 0); 61 _num_fp_args = 0; 62 _stack_offset = wordSize; // don't overwrite return address 63 #endif // _WIN64 64 #endif // AMD64 65 } 66 67 // Code generation 68 void generate(uint64_t fingerprint); 69 70 // Code generation support 71 static Register from(); 72 static Register to(); 73 static Register temp(); 74 };