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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_UTILITY_HH__
#define __ARCH_SPARC_UTILITY_HH__
#include "arch/sparc/faults.hh"
#include "arch/sparc/isa_traits.hh"
#include "base/misc.hh"
#include "base/bitfield.hh"
#include "cpu/thread_context.hh"
namespace SparcISA
{
static inline bool
inUserMode(ThreadContext *tc)
{
return !(tc->readMiscReg(MISCREG_PSTATE & (1 << 2)) ||
tc->readMiscReg(MISCREG_HPSTATE & (1 << 2)));
}
inline ExtMachInst
makeExtMI(MachInst inst, ThreadContext * xc) {
ExtMachInst emi = (unsigned MachInst) inst;
//The I bit, bit 13, is used to figure out where the ASI
//should come from. Use that in the ExtMachInst. This is
//slightly redundant, but it removes the need to put a condition
//into all the execute functions
if(inst & (1 << 13))
emi |= (static_cast<ExtMachInst>(xc->readMiscReg(MISCREG_ASI))
<< (sizeof(MachInst) * 8));
else
emi |= (static_cast<ExtMachInst>(bits(inst, 12, 5))
<< (sizeof(MachInst) * 8));
return emi;
}
inline bool isCallerSaveIntegerRegister(unsigned int reg) {
panic("register classification not implemented");
return false;
}
inline bool isCalleeSaveIntegerRegister(unsigned int reg) {
panic("register classification not implemented");
return false;
}
inline bool isCallerSaveFloatRegister(unsigned int reg) {
panic("register classification not implemented");
return false;
}
inline bool isCalleeSaveFloatRegister(unsigned int reg) {
panic("register classification not implemented");
return false;
}
// Instruction address compression hooks
inline Addr realPCToFetchPC(const Addr &addr)
{
return addr;
}
inline Addr fetchPCToRealPC(const Addr &addr)
{
return addr;
}
// the size of "fetched" instructions (not necessarily the size
// of real instructions for PISA)
inline size_t fetchInstSize()
{
return sizeof(MachInst);
}
/**
* Function to insure ISA semantics about 0 registers.
* @param tc The thread context.
*/
template <class TC>
void zeroRegisters(TC *tc);
inline void initCPU(ThreadContext *tc, int cpuId)
{
static Fault por = new PowerOnReset();
por->invoke(tc);
}
} // namespace SparcISA
#endif
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