156 lines
5.2 KiB
C++
156 lines
5.2 KiB
C++
/*
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* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
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* Copyright 2012, 2013 SAP AG. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "asm/assembler.inline.hpp"
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#include "interpreter/interpreter.hpp"
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#include "interpreter/interpreterRuntime.hpp"
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#include "memory/allocation.inline.hpp"
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#include "memory/universe.inline.hpp"
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#include "oops/method.hpp"
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#include "oops/oop.inline.hpp"
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#include "runtime/handles.inline.hpp"
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#include "runtime/icache.hpp"
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#include "runtime/interfaceSupport.hpp"
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#include "runtime/signature.hpp"
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#define __ _masm->
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// Access macros for Java and C arguments.
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// The first Java argument is at index -1.
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#define locals_j_arg_at(index) (Interpreter::local_offset_in_bytes(index)), R18_locals
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// The first C argument is at index 0.
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#define sp_c_arg_at(index) ((index)*wordSize + _abi(carg_1)), R1_SP
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// Implementation of SignatureHandlerGenerator
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void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {
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Argument jni_arg(jni_offset());
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Register r = jni_arg.is_register() ? jni_arg.as_register() : R0;
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__ lwa(r, locals_j_arg_at(offset())); // sign extension of integer
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if (DEBUG_ONLY(true ||) !jni_arg.is_register()) {
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__ std(r, sp_c_arg_at(jni_arg.number()));
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}
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}
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void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
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Argument jni_arg(jni_offset());
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Register r = jni_arg.is_register() ? jni_arg.as_register() : R0;
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__ ld(r, locals_j_arg_at(offset()+1)); // long resides in upper slot
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if (DEBUG_ONLY(true ||) !jni_arg.is_register()) {
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__ std(r, sp_c_arg_at(jni_arg.number()));
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}
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}
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void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
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FloatRegister fp_reg = (_num_used_fp_arg_regs < 13/*max_fp_register_arguments*/)
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? as_FloatRegister((_num_used_fp_arg_regs++) + F1_ARG1->encoding())
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: F0;
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__ lfs(fp_reg, locals_j_arg_at(offset()));
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if (DEBUG_ONLY(true ||) jni_offset() > 8) {
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__ stfs(fp_reg, sp_c_arg_at(jni_offset()));
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}
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}
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void InterpreterRuntime::SignatureHandlerGenerator::pass_double() {
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FloatRegister fp_reg = (_num_used_fp_arg_regs < 13/*max_fp_register_arguments*/)
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? as_FloatRegister((_num_used_fp_arg_regs++) + F1_ARG1->encoding())
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: F0;
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__ lfd(fp_reg, locals_j_arg_at(offset()+1));
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if (DEBUG_ONLY(true ||) jni_offset() > 8) {
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__ stfd(fp_reg, sp_c_arg_at(jni_offset()));
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}
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}
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void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
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Argument jni_arg(jni_offset());
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Register r = jni_arg.is_register() ? jni_arg.as_register() : R11_scratch1;
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// The handle for a receiver will never be null.
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bool do_NULL_check = offset() != 0 || is_static();
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Label do_null;
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if (do_NULL_check) {
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__ ld(R0, locals_j_arg_at(offset()));
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__ cmpdi(CCR0, R0, 0);
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__ li(r, 0);
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__ beq(CCR0, do_null);
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}
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__ addir(r, locals_j_arg_at(offset()));
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__ bind(do_null);
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if (DEBUG_ONLY(true ||) !jni_arg.is_register()) {
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__ std(r, sp_c_arg_at(jni_arg.number()));
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}
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}
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void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) {
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#if !defined(ABI_ELFv2)
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// Emit fd for current codebuffer. Needs patching!
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__ emit_fd();
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#endif
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// Generate code to handle arguments.
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iterate(fingerprint);
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// Return the result handler.
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__ load_const(R3_RET, AbstractInterpreter::result_handler(method()->result_type()));
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__ blr();
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__ flush();
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}
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#undef __
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// Implementation of SignatureHandlerLibrary
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void SignatureHandlerLibrary::pd_set_handler(address handler) {
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#if !defined(ABI_ELFv2)
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// patch fd here.
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FunctionDescriptor* fd = (FunctionDescriptor*) handler;
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fd->set_entry(handler + (int)sizeof(FunctionDescriptor));
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assert(fd->toc() == (address)0xcafe, "need to adjust TOC here");
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#endif
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}
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// Access function to get the signature.
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IRT_ENTRY(address, InterpreterRuntime::get_signature(JavaThread* thread, Method* method))
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methodHandle m(thread, method);
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assert(m->is_native(), "sanity check");
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Symbol *s = m->signature();
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return (address) s->base();
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IRT_END
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IRT_ENTRY(address, InterpreterRuntime::get_result_handler(JavaThread* thread, Method* method))
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methodHandle m(thread, method);
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assert(m->is_native(), "sanity check");
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return AbstractInterpreter::result_handler(m->result_type());
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IRT_END
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