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+/*
+ * Copyright (c) 2003-2005 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#ifndef __ARCH_SPARC_ISA_TRAITS_HH__
+#define __ARCH_SPARC_ISA_TRAITS_HH__
+
+#include "arch/sparc/types.hh"
+#include "base/misc.hh"
+#include "config/full_system.hh"
+#include "sim/host.hh"
+
+class ThreadContext;
+class FastCPU;
+//class FullCPU;
+class Checkpoint;
+
+class StaticInst;
+class StaticInstPtr;
+
+namespace BigEndianGuest {}
+
+#if FULL_SYSTEM
+#include "arch/sparc/isa_fullsys_traits.hh"
+#endif
+
+namespace SparcISA
+{
+ class RegFile;
+
+ //This makes sure the big endian versions of certain functions are used.
+ using namespace BigEndianGuest;
+
+ // Alpha Does NOT have a delay slot
+ #define ISA_HAS_DELAY_SLOT 1
+
+ //TODO this needs to be a SPARC Noop
+ // Alpha UNOP (ldq_u r31,0(r0))
+ const MachInst NoopMachInst = 0x2ffe0000;
+
+ const int NumIntRegs = 32;
+ const int NumFloatRegs = 64;
+ const int NumMiscRegs = 40;
+
+ // These enumerate all the registers for dependence tracking.
+ enum DependenceTags {
+ // 0..31 are the integer regs 0..31
+ // 32..95 are the FP regs 0..31, i.e. use (reg + FP_Base_DepTag)
+ FP_Base_DepTag = NumIntRegs,
+ Ctrl_Base_DepTag = NumIntRegs + NumFloatRegs,
+ //XXX These are here solely to get compilation and won't work
+ Fpcr_DepTag = 0,
+ Uniq_DepTag = 0
+ };
+
+
+ // MAXTL - maximum trap level
+ const int MaxPTL = 2;
+ const int MaxTL = 6;
+ const int MaxGL = 3;
+ const int MaxPGL = 2;
+
+ // NWINDOWS - number of register windows, can be 3 to 32
+ const int NWindows = 32;
+
+ // semantically meaningful register indices
+ const int ZeroReg = 0; // architecturally meaningful
+ // the rest of these depend on the ABI
+ const int StackPointerReg = 14;
+ const int ReturnAddressReg = 31; // post call, precall is 15
+ const int ReturnValueReg = 8; // Post return, 24 is pre-return.
+ const int FramePointerReg = 30;
+ const int ArgumentReg0 = 8;
+ const int ArgumentReg1 = 9;
+ const int ArgumentReg2 = 10;
+ const int ArgumentReg3 = 11;
+ const int ArgumentReg4 = 12;
+ const int ArgumentReg5 = 13;
+ // Some OS syscall use a second register (o1) to return a second value
+ const int SyscallPseudoReturnReg = ArgumentReg1;
+
+ //XXX These numbers are bogus
+ const int MaxInstSrcRegs = 8;
+ const int MaxInstDestRegs = 9;
+
+ //8K. This value is implmentation specific; and should probably
+ //be somewhere else.
+ const int LogVMPageSize = 13;
+ const int VMPageSize = (1 << LogVMPageSize);
+
+ //Why does both the previous set of constants and this one exist?
+ const int PageShift = 13;
+ const int PageBytes = ULL(1) << PageShift;
+
+ const int BranchPredAddrShiftAmt = 2;
+
+ const int MachineBytes = 8;
+ const int WordBytes = 4;
+ const int HalfwordBytes = 2;
+ const int ByteBytes = 1;
+
+ void serialize(std::ostream & os);
+
+ void unserialize(Checkpoint *cp, const std::string &section);
+
+ StaticInstPtr decodeInst(ExtMachInst);
+
+ // return a no-op instruction... used for instruction fetch faults
+ extern const MachInst NoopMachInst;
+}
+
+#endif // __ARCH_SPARC_ISA_TRAITS_HH__