1 /* 2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2012, 2013 SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #include "precompiled.hpp" 27 #include "asm/assembler.inline.hpp" 28 #include "interpreter/interpreter.hpp" 29 #include "interpreter/interpreterRuntime.hpp" 30 #include "memory/allocation.inline.hpp" 31 #include "memory/universe.hpp" 32 #include "oops/method.hpp" 33 #include "oops/oop.inline.hpp" 34 #include "runtime/handles.inline.hpp" 35 #include "runtime/icache.hpp" 36 #include "runtime/interfaceSupport.inline.hpp" 37 #include "runtime/signature.hpp" 38 39 #define __ _masm-> 40 41 // Access macros for Java and C arguments. 42 // The first Java argument is at index -1. 43 #define locals_j_arg_at(index) (Interpreter::local_offset_in_bytes(index)), R18_locals 44 // The first C argument is at index 0. 45 #define sp_c_arg_at(index) ((index)*wordSize + _abi(carg_1)), R1_SP 46 47 // Implementation of SignatureHandlerGenerator 48 49 void InterpreterRuntime::SignatureHandlerGenerator::pass_int() { 50 Argument jni_arg(jni_offset()); 51 Register r = jni_arg.is_register() ? jni_arg.as_register() : R0; 52 53 __ lwa(r, locals_j_arg_at(offset())); // sign extension of integer 54 if (DEBUG_ONLY(true ||) !jni_arg.is_register()) { 55 __ std(r, sp_c_arg_at(jni_arg.number())); 56 } 57 } 58 59 void InterpreterRuntime::SignatureHandlerGenerator::pass_long() { 60 Argument jni_arg(jni_offset()); 61 Register r = jni_arg.is_register() ? jni_arg.as_register() : R0; 62 63 __ ld(r, locals_j_arg_at(offset()+1)); // long resides in upper slot 64 if (DEBUG_ONLY(true ||) !jni_arg.is_register()) { 65 __ std(r, sp_c_arg_at(jni_arg.number())); 66 } 67 } 68 69 void InterpreterRuntime::SignatureHandlerGenerator::pass_float() { 70 FloatRegister fp_reg = (_num_used_fp_arg_regs < 13/*max_fp_register_arguments*/) 71 ? as_FloatRegister((_num_used_fp_arg_regs++) + F1_ARG1->encoding()) 72 : F0; 73 74 __ lfs(fp_reg, locals_j_arg_at(offset())); 75 if (DEBUG_ONLY(true ||) jni_offset() > 8) { 76 __ stfs(fp_reg, sp_c_arg_at(jni_offset())); 77 } 78 } 79 80 void InterpreterRuntime::SignatureHandlerGenerator::pass_double() { 81 FloatRegister fp_reg = (_num_used_fp_arg_regs < 13/*max_fp_register_arguments*/) 82 ? as_FloatRegister((_num_used_fp_arg_regs++) + F1_ARG1->encoding()) 83 : F0; 84 85 __ lfd(fp_reg, locals_j_arg_at(offset()+1)); 86 if (DEBUG_ONLY(true ||) jni_offset() > 8) { 87 __ stfd(fp_reg, sp_c_arg_at(jni_offset())); 88 } 89 } 90 91 void InterpreterRuntime::SignatureHandlerGenerator::pass_object() { 92 Argument jni_arg(jni_offset()); 93 Register r = jni_arg.is_register() ? jni_arg.as_register() : R11_scratch1; 94 95 // The handle for a receiver will never be null. 96 bool do_NULL_check = offset() != 0 || is_static(); 97 98 Label do_null; 99 if (do_NULL_check) { 100 __ ld(R0, locals_j_arg_at(offset())); 101 __ cmpdi(CCR0, R0, 0); 102 __ li(r, 0); 103 __ beq(CCR0, do_null); 104 } 105 __ addir(r, locals_j_arg_at(offset())); 106 __ bind(do_null); 107 if (DEBUG_ONLY(true ||) !jni_arg.is_register()) { 108 __ std(r, sp_c_arg_at(jni_arg.number())); 109 } 110 } 111 112 void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) { 113 #if !defined(ABI_ELFv2) 114 // Emit fd for current codebuffer. Needs patching! 115 __ emit_fd(); 116 #endif 117 118 // Generate code to handle arguments. 119 iterate(fingerprint); 120 121 // Return the result handler. 122 __ load_const(R3_RET, AbstractInterpreter::result_handler(method()->result_type())); 123 __ blr(); 124 125 __ flush(); 126 } 127 128 #undef __ 129 130 // Implementation of SignatureHandlerLibrary 131 132 void SignatureHandlerLibrary::pd_set_handler(address handler) { 133 #if !defined(ABI_ELFv2) 134 // patch fd here. 135 FunctionDescriptor* fd = (FunctionDescriptor*) handler; 136 137 fd->set_entry(handler + (int)sizeof(FunctionDescriptor)); 138 assert(fd->toc() == (address)0xcafe, "need to adjust TOC here"); 139 #endif 140 } 141 142 143 // Access function to get the signature. 144 IRT_ENTRY(address, InterpreterRuntime::get_signature(JavaThread* thread, Method* method)) 145 methodHandle m(thread, method); 146 assert(m->is_native(), "sanity check"); 147 Symbol *s = m->signature(); 148 return (address) s->base(); 149 IRT_END 150 151 IRT_ENTRY(address, InterpreterRuntime::get_result_handler(JavaThread* thread, Method* method)) 152 methodHandle m(thread, method); 153 assert(m->is_native(), "sanity check"); 154 return AbstractInterpreter::result_handler(m->result_type()); 155 IRT_END