2 * Copyright (c) 2007 The Hewlett-Packard Development Company
5 * Redistribution and use of this software in source and binary forms,
6 * with or without modification, are permitted provided that the
7 * following conditions are met:
9 * The software must be used only for Non-Commercial Use which means any
10 * use which is NOT directed to receiving any direct monetary
11 * compensation for, or commercial advantage from such use. Illustrative
12 * examples of non-commercial use are academic research, personal study,
13 * teaching, education and corporate research & development.
14 * Illustrative examples of commercial use are distributing products for
15 * commercial advantage and providing services using the software for
16 * commercial advantage.
18 * If you wish to use this software or functionality therein that may be
19 * covered by patents for commercial use, please contact:
20 * Director of Intellectual Property Licensing
21 * Office of Strategy and Technology
22 * Hewlett-Packard Company
24 * Palo Alto, California 94304
26 * Redistributions of source code must retain the above copyright notice,
27 * this list of conditions and the following disclaimer. Redistributions
28 * in binary form must reproduce the above copyright notice, this list of
29 * conditions and the following disclaimer in the documentation and/or
30 * other materials provided with the distribution. Neither the name of
31 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
32 * contributors may be used to endorse or promote products derived from
33 * this software without specific prior written permission. No right of
34 * sublicense is granted herewith. Derivatives of the software and
35 * output created using the software may be prepared, but only for
36 * Non-Commercial Uses. Derivatives of the software may be shared with
37 * others provided: (i) the others agree to abide by the list of
38 * conditions herein which includes the Non-Commercial Use restrictions;
39 * and (ii) such Derivatives of the software include the above copyright
40 * notice to acknowledge the contribution from this software where
41 * applicable, this list of conditions and the disclaimer below.
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
58 #ifndef __ARCH_X86_ISATRAITS_HH__
59 #define __ARCH_X86_ISATRAITS_HH__
61 #include "arch/x86/intregs.hh"
62 #include "arch/x86/max_inst_regs.hh"
63 #include "arch/x86/types.hh"
64 #include "arch/x86/x86_traits.hh"
65 #include "sim/host.hh"
69 namespace LittleEndianGuest {}
73 //This makes sure the little endian version of certain functions
75 using namespace LittleEndianGuest;
76 using X86ISAInst::MaxInstSrcRegs;
77 using X86ISAInst::MaxInstDestRegs;
79 // X86 does not have a delay slot
80 #define ISA_HAS_DELAY_SLOT 0
82 // X86 NOP (XCHG rAX, rAX)
83 //XXX This needs to be set to an intermediate instruction struct
84 //which encodes this instruction
86 // These enumerate all the registers for dependence tracking.
88 //There are 16 microcode registers at the moment. This is an
89 //unusually large constant to make sure there isn't overflow.
97 //The microcode fp registers
99 //The indices that are mapped over the fp stack
103 // semantically meaningful register indices
104 //There is no such register in X86
105 const int ZeroReg = NUM_INTREGS;
106 const int StackPointerReg = INTREG_RSP;
107 //X86 doesn't seem to have a link register
108 const int ReturnAddressReg = 0;
109 const int ReturnValueReg = INTREG_RAX;
110 const int FramePointerReg = INTREG_RBP;
111 const int ArgumentReg[] = {
115 //This argument register is r10 for syscalls and rcx for C.
121 const int NumArgumentRegs = sizeof(ArgumentReg) / sizeof(const int);
123 // Some OS syscalls use a second register (rdx) to return a second
125 const int SyscallPseudoReturnReg = INTREG_RDX;
127 //4k. This value is not constant on x86.
128 const int LogVMPageSize = 12;
129 const int VMPageSize = (1 << LogVMPageSize);
131 const int PageShift = 12;
132 const int PageBytes = 1ULL << PageShift;
134 const int BranchPredAddrShiftAmt = 0;
136 StaticInstPtr decodeInst(ExtMachInst);
138 const Addr LoadAddrMask = ULL(-1);
141 #endif // __ARCH_X86_ISATRAITS_HH__