| /* |
| * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved. |
| * Copyright 2007, 2008, 2010 Red Hat, Inc. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "interpreter/interpreter.hpp" |
| #include "interpreter/interpreterRuntime.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "memory/universe.inline.hpp" |
| #include "oops/method.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "runtime/handles.inline.hpp" |
| #include "runtime/icache.hpp" |
| #include "runtime/interfaceSupport.hpp" |
| #include "runtime/signature.hpp" |
| #include "stack_zero.inline.hpp" |
| #include "utilities/align.hpp" |
| |
| void InterpreterRuntime::SignatureHandlerGeneratorBase::pass_int() { |
| push(T_INT); |
| _cif->nargs++; |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGeneratorBase::pass_long() { |
| push(T_LONG); |
| _cif->nargs++; |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGeneratorBase::pass_float() { |
| push(T_FLOAT); |
| _cif->nargs++; |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGeneratorBase::pass_double() { |
| push(T_DOUBLE); |
| _cif->nargs++; |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGeneratorBase::pass_object() { |
| push(T_OBJECT); |
| _cif->nargs++; |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGeneratorBase::push(BasicType type) { |
| ffi_type *ftype = NULL; |
| switch (type) { |
| case T_VOID: |
| ftype = &ffi_type_void; |
| break; |
| |
| case T_BOOLEAN: |
| ftype = &ffi_type_uint8; |
| break; |
| |
| case T_CHAR: |
| ftype = &ffi_type_uint16; |
| break; |
| |
| case T_BYTE: |
| ftype = &ffi_type_sint8; |
| break; |
| |
| case T_SHORT: |
| ftype = &ffi_type_sint16; |
| break; |
| |
| case T_INT: |
| ftype = &ffi_type_sint32; |
| break; |
| |
| case T_LONG: |
| ftype = &ffi_type_sint64; |
| break; |
| |
| case T_FLOAT: |
| ftype = &ffi_type_float; |
| break; |
| |
| case T_DOUBLE: |
| ftype = &ffi_type_double; |
| break; |
| |
| case T_OBJECT: |
| case T_ARRAY: |
| ftype = &ffi_type_pointer; |
| break; |
| |
| default: |
| ShouldNotReachHere(); |
| } |
| push((intptr_t) ftype); |
| } |
| |
| // For fast signature handlers the "signature handler" is generated |
| // into a temporary buffer. It is then copied to its final location, |
| // and pd_set_handler is called on it. We have this two stage thing |
| // to accomodate this. |
| |
| void InterpreterRuntime::SignatureHandlerGeneratorBase::generate( |
| uint64_t fingerprint) { |
| |
| // Build the argument types list |
| pass_object(); |
| if (method()->is_static()) |
| pass_object(); |
| iterate(fingerprint); |
| |
| // Tack on the result type |
| push(method()->result_type()); |
| } |
| |
| void InterpreterRuntime::SignatureHandler::finalize() { |
| ffi_status status = |
| ffi_prep_cif(cif(), |
| FFI_DEFAULT_ABI, |
| argument_count(), |
| result_type(), |
| argument_types()); |
| |
| assert(status == FFI_OK, "should be"); |
| } |
| |
| IRT_ENTRY(address, |
| InterpreterRuntime::slow_signature_handler(JavaThread* thread, |
| Method* method, |
| intptr_t* unused1, |
| intptr_t* unused2)) |
| ZeroStack *stack = thread->zero_stack(); |
| |
| int required_words = |
| (align_up(sizeof(ffi_cif), wordSize) >> LogBytesPerWord) + |
| (method->is_static() ? 2 : 1) + method->size_of_parameters() + 1; |
| |
| stack->overflow_check(required_words, CHECK_NULL); |
| |
| intptr_t *buf = (intptr_t *) stack->alloc(required_words * wordSize); |
| SlowSignatureHandlerGenerator sshg(methodHandle(thread, method), buf); |
| sshg.generate((uint64_t)CONST64(-1)); |
| |
| SignatureHandler *handler = sshg.handler(); |
| handler->finalize(); |
| |
| return (address) handler; |
| IRT_END |
| |
| void SignatureHandlerLibrary::pd_set_handler(address handlerAddr) { |
| InterpreterRuntime::SignatureHandler *handler = |
| InterpreterRuntime::SignatureHandler::from_handlerAddr(handlerAddr); |
| |
| handler->finalize(); |
| } |