registers.hh revision 12104:edd63f9c6184 
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * Copyright (c) 2013 Advanced Micro Devices, Inc.
4 * All rights reserved.
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating
9 * to a hardware implementation of the functionality of the software
10 * licensed hereunder.  You may use the software subject to the license
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12 * unmodified and in its entirety in all distributions of the software,
13 * modified or unmodified, in source code or in binary form.
14 *
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions are
17 * met: redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer;
19 * redistributions in binary form must reproduce the above copyright
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21 * documentation and/or other materials provided with the distribution;
22 * neither the name of the copyright holders nor the names of its
23 * contributors may be used to endorse or promote products derived from
24 * this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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32 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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37 *
38 * Authors: Gabe Black
39 */
40
41#ifndef __ARCH_X86_REGISTERS_HH__
42#define __ARCH_X86_REGISTERS_HH__
43
44#include "arch/x86/generated/max_inst_regs.hh"
45#include "arch/x86/regs/int.hh"
46#include "arch/x86/regs/ccr.hh"
47#include "arch/x86/regs/misc.hh"
48#include "arch/x86/x86_traits.hh"
49
50namespace X86ISA
51{
52using X86ISAInst::MaxInstSrcRegs;
53using X86ISAInst::MaxInstDestRegs;
54using X86ISAInst::MaxMiscDestRegs;
55const int NumMiscRegs = NUM_MISCREGS;
56
57const int NumIntArchRegs = NUM_INTREGS;
58const int NumIntRegs = NumIntArchRegs + NumMicroIntRegs + NumImplicitIntRegs;
59const int NumCCRegs = NUM_CCREGS;
60
61#define ISA_HAS_CC_REGS
62
63// Each 128 bit xmm register is broken into two effective 64 bit registers.
64// Add 8 for the indices that are mapped over the fp stack
65const int NumFloatRegs =
66    NumMMXRegs + 2 * NumXMMRegs + NumMicroFpRegs + 8;
67
68// These enumerate all the registers for dependence tracking.
69enum DependenceTags {
70    // FP_Reg_Base must be large enough to be bigger than any integer
71    // register index which has the IntFoldBit (1 << 6) set.  To be safe
72    // we just start at (1 << 7) == 128.
73    FP_Reg_Base = 128,
74    CC_Reg_Base = FP_Reg_Base + NumFloatRegs,
75    Misc_Reg_Base = CC_Reg_Base + NumCCRegs,
76    Max_Reg_Index = Misc_Reg_Base + NumMiscRegs
77};
78
79// semantically meaningful register indices
80//There is no such register in X86
81const int ZeroReg = NUM_INTREGS;
82const int StackPointerReg = INTREG_RSP;
83//X86 doesn't seem to have a link register
84const int ReturnAddressReg = 0;
85const int ReturnValueReg = INTREG_RAX;
86const int FramePointerReg = INTREG_RBP;
87
88// Some OS syscalls use a second register (rdx) to return a second
89// value
90const int SyscallPseudoReturnReg = INTREG_RDX;
91
92typedef uint64_t IntReg;
93typedef uint64_t CCReg;
94typedef uint64_t MiscReg;
95
96//These floating point types are correct for mmx, but not
97//technically for x87 (80 bits) or at all for xmm (128 bits)
98typedef double FloatReg;
99typedef uint64_t FloatRegBits;
100typedef union
101{
102    IntReg intReg;
103    FloatReg fpReg;
104    CCReg ccReg;
105    MiscReg ctrlReg;
106} AnyReg;
107
108} // namespace X86ISA
109
110#endif // __ARCH_X86_REGFILE_HH__
111