| /* |
| * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| * Copyright 2012, 2013 SAP AG. All rights reserved. |
| * 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 "asm/assembler.inline.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" |
| |
| #define __ _masm-> |
| |
| // Access macros for Java and C arguments. |
| // The first Java argument is at index -1. |
| #define locals_j_arg_at(index) (Interpreter::local_offset_in_bytes(index)), R18_locals |
| // The first C argument is at index 0. |
| #define sp_c_arg_at(index) ((index)*wordSize + _abi(carg_1)), R1_SP |
| |
| // Implementation of SignatureHandlerGenerator |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_int() { |
| Argument jni_arg(jni_offset()); |
| Register r = jni_arg.is_register() ? jni_arg.as_register() : R0; |
| |
| __ lwa(r, locals_j_arg_at(offset())); // sign extension of integer |
| if (DEBUG_ONLY(true ||) !jni_arg.is_register()) { |
| __ std(r, sp_c_arg_at(jni_arg.number())); |
| } |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_long() { |
| Argument jni_arg(jni_offset()); |
| Register r = jni_arg.is_register() ? jni_arg.as_register() : R0; |
| |
| __ ld(r, locals_j_arg_at(offset()+1)); // long resides in upper slot |
| if (DEBUG_ONLY(true ||) !jni_arg.is_register()) { |
| __ std(r, sp_c_arg_at(jni_arg.number())); |
| } |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_float() { |
| FloatRegister fp_reg = (_num_used_fp_arg_regs < 13/*max_fp_register_arguments*/) |
| ? as_FloatRegister((_num_used_fp_arg_regs++) + F1_ARG1->encoding()) |
| : F0; |
| |
| __ lfs(fp_reg, locals_j_arg_at(offset())); |
| if (DEBUG_ONLY(true ||) jni_offset() > 8) { |
| __ stfs(fp_reg, sp_c_arg_at(jni_offset())); |
| } |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_double() { |
| FloatRegister fp_reg = (_num_used_fp_arg_regs < 13/*max_fp_register_arguments*/) |
| ? as_FloatRegister((_num_used_fp_arg_regs++) + F1_ARG1->encoding()) |
| : F0; |
| |
| __ lfd(fp_reg, locals_j_arg_at(offset()+1)); |
| if (DEBUG_ONLY(true ||) jni_offset() > 8) { |
| __ stfd(fp_reg, sp_c_arg_at(jni_offset())); |
| } |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_object() { |
| Argument jni_arg(jni_offset()); |
| Register r = jni_arg.is_register() ? jni_arg.as_register() : R11_scratch1; |
| |
| // The handle for a receiver will never be null. |
| bool do_NULL_check = offset() != 0 || is_static(); |
| |
| Label do_null; |
| if (do_NULL_check) { |
| __ ld(R0, locals_j_arg_at(offset())); |
| __ cmpdi(CCR0, R0, 0); |
| __ li(r, 0); |
| __ beq(CCR0, do_null); |
| } |
| __ addir(r, locals_j_arg_at(offset())); |
| __ bind(do_null); |
| if (DEBUG_ONLY(true ||) !jni_arg.is_register()) { |
| __ std(r, sp_c_arg_at(jni_arg.number())); |
| } |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) { |
| #if !defined(ABI_ELFv2) |
| // Emit fd for current codebuffer. Needs patching! |
| __ emit_fd(); |
| #endif |
| |
| // Generate code to handle arguments. |
| iterate(fingerprint); |
| |
| // Return the result handler. |
| __ load_const(R3_RET, AbstractInterpreter::result_handler(method()->result_type())); |
| __ blr(); |
| |
| __ flush(); |
| } |
| |
| #undef __ |
| |
| // Implementation of SignatureHandlerLibrary |
| |
| void SignatureHandlerLibrary::pd_set_handler(address handler) { |
| #if !defined(ABI_ELFv2) |
| // patch fd here. |
| FunctionDescriptor* fd = (FunctionDescriptor*) handler; |
| |
| fd->set_entry(handler + (int)sizeof(FunctionDescriptor)); |
| assert(fd->toc() == (address)0xcafe, "need to adjust TOC here"); |
| #endif |
| } |
| |
| |
| // Access function to get the signature. |
| IRT_ENTRY(address, InterpreterRuntime::get_signature(JavaThread* thread, Method* method)) |
| methodHandle m(thread, method); |
| assert(m->is_native(), "sanity check"); |
| Symbol *s = m->signature(); |
| return (address) s->base(); |
| IRT_END |
| |
| IRT_ENTRY(address, InterpreterRuntime::get_result_handler(JavaThread* thread, Method* method)) |
| methodHandle m(thread, method); |
| assert(m->is_native(), "sanity check"); |
| return AbstractInterpreter::result_handler(m->result_type()); |
| IRT_END |