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121 lines
3.3 KiB
C++
121 lines
3.3 KiB
C++
/*
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* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright 2007 Red Hat, Inc.
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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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#ifndef CPU_ZERO_VM_REGISTER_ZERO_HPP
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#define CPU_ZERO_VM_REGISTER_ZERO_HPP
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#include "asm/register.hpp"
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#include "vm_version_zero.hpp"
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class VMRegImpl;
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typedef VMRegImpl* VMReg;
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// Use Register as shortcut
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class RegisterImpl;
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typedef RegisterImpl* Register;
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inline Register as_Register(int encoding) {
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return (Register)(intptr_t) encoding;
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}
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// The implementation of integer registers for the zero architecture
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class RegisterImpl : public AbstractRegisterImpl {
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public:
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enum {
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number_of_registers = 0
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};
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// construction
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inline friend Register as_Register(int encoding);
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VMReg as_VMReg();
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// derived registers, offsets, and addresses
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Register successor() const {
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return as_Register(encoding() + 1);
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}
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// accessors
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int encoding() const {
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assert(is_valid(), "invalid register");
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return (intptr_t)this;
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}
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bool is_valid() const {
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return 0 <= (intptr_t) this && (intptr_t)this < number_of_registers;
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}
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const char* name() const;
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};
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// Use FloatRegister as shortcut
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class FloatRegisterImpl;
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typedef FloatRegisterImpl* FloatRegister;
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inline FloatRegister as_FloatRegister(int encoding) {
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return (FloatRegister)(intptr_t) encoding;
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}
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// The implementation of floating point registers for the zero architecture
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class FloatRegisterImpl : public AbstractRegisterImpl {
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public:
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enum {
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number_of_registers = 0
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};
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// construction
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inline friend FloatRegister as_FloatRegister(int encoding);
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VMReg as_VMReg();
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// derived registers, offsets, and addresses
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FloatRegister successor() const {
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return as_FloatRegister(encoding() + 1);
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}
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// accessors
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int encoding() const {
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assert(is_valid(), "invalid register");
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return (intptr_t)this;
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}
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bool is_valid() const {
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return 0 <= (intptr_t) this && (intptr_t)this < number_of_registers;
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}
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const char* name() const;
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};
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class ConcreteRegisterImpl : public AbstractRegisterImpl {
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public:
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enum {
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number_of_registers = RegisterImpl::number_of_registers +
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FloatRegisterImpl::number_of_registers
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};
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static const int max_gpr;
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static const int max_fpr;
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};
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CONSTANT_REGISTER_DECLARATION(Register, noreg, (-1));
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#ifndef DONT_USE_REGISTER_DEFINES
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#define noreg ((Register)(noreg_RegisterEnumValue))
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#endif
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#endif // CPU_ZERO_VM_REGISTER_ZERO_HPP
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