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