2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
3 * Copyright (c) 2007-2008 The Florida State University
4 * Copyright (c) 2009 The University of Edinburgh
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8 * modification, are permitted provided that the following conditions are
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16 * this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 * Authors: Timothy M. Jones
35 #ifndef __ARCH_POWER_ISA_TRAITS_HH__
36 #define __ARCH_POWER_ISA_TRAITS_HH__
38 #include "arch/power/types.hh"
39 #include "base/types.hh"
40 #include "cpu/static_inst_fwd.hh"
42 namespace BigEndianGuest {}
47 using namespace BigEndianGuest;
49 StaticInstPtr decodeInst(ExtMachInst);
51 // POWER DOES NOT have a delay slot
52 #define ISA_HAS_DELAY_SLOT 0
54 const Addr PageShift = 12;
55 const Addr PageBytes = ULL(1) << PageShift;
56 const Addr Page_Mask = ~(PageBytes - 1);
57 const Addr PageOffset = PageBytes - 1;
59 const Addr PteShift = 3;
60 const Addr NPtePageShift = PageShift - PteShift;
61 const Addr NPtePage = ULL(1) << NPtePageShift;
62 const Addr PteMask = NPtePage - 1;
64 const int LogVMPageSize = 12; // 4K bytes
65 const int VMPageSize = (1 << LogVMPageSize);
67 const int MachineBytes = 4;
69 // This is ori 0, 0, 0
70 const ExtMachInst NoopMachInst = 0x60000000;
72 // Memory accesses can be unaligned
73 const bool HasUnalignedMemAcc = true;
75 } // namespace PowerISA
77 #endif // __ARCH_POWER_ISA_TRAITS_HH__