6211fe5d2e
inorder was incorrectly storing FP values and confusing the integer/fp storage view of floating point operations. A big issue was knowing trying to infer when were doing single or double precision access because this lets you know the size of value to store (32-64 bits). This isnt exactly straightforward since alpha uses all 64-bit regs while mips/sparc uses a dual-reg view. by getting this value from the actual floating point register file, the model can figure out what it needs to store
120 lines
3.2 KiB
C++
120 lines
3.2 KiB
C++
/*
|
|
* 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: Steve Reinhardt
|
|
* Gabe Black
|
|
*/
|
|
|
|
#ifndef __ARCH_ALPHA_FLOATREGFILE_HH__
|
|
#define __ARCH_ALPHA_FLOATREGFILE_HH__
|
|
|
|
#include <iosfwd>
|
|
#include <string>
|
|
|
|
#include "arch/alpha/isa_traits.hh"
|
|
#include "arch/alpha/types.hh"
|
|
|
|
class Checkpoint;
|
|
|
|
namespace AlphaISA {
|
|
|
|
const int SingleWidth = 32;
|
|
const int SingleBytes = SingleWidth / 4;
|
|
const int DoubleWidth = 64;
|
|
const int DoubleBytes = DoubleWidth / 4;
|
|
const int QuadWidth = 128;
|
|
const int QuadBytes = QuadWidth / 4;
|
|
|
|
class FloatRegFile
|
|
{
|
|
public:
|
|
static const int regWidth = DoubleWidth;
|
|
|
|
union {
|
|
uint64_t q[NumFloatRegs]; // integer qword view
|
|
double d[NumFloatRegs]; // double-precision floating point view
|
|
};
|
|
|
|
void clear();
|
|
|
|
void serialize(std::ostream &os);
|
|
void unserialize(Checkpoint *cp, const std::string §ion);
|
|
|
|
FloatReg
|
|
readReg(int floatReg)
|
|
{
|
|
return d[floatReg];
|
|
}
|
|
|
|
FloatReg
|
|
readReg(int floatReg, int width)
|
|
{
|
|
return readReg(floatReg);
|
|
}
|
|
|
|
FloatRegBits
|
|
readRegBits(int floatReg)
|
|
{
|
|
return q[floatReg];
|
|
}
|
|
|
|
FloatRegBits
|
|
readRegBits(int floatReg, int width)
|
|
{
|
|
return readRegBits(floatReg);
|
|
}
|
|
|
|
void
|
|
setReg(int floatReg, const FloatReg &val)
|
|
{
|
|
d[floatReg] = val;
|
|
}
|
|
|
|
void
|
|
setReg(int floatReg, const FloatReg &val, int width)
|
|
{
|
|
setReg(floatReg, val);
|
|
}
|
|
|
|
void
|
|
setRegBits(int floatReg, const FloatRegBits &val)
|
|
{
|
|
q[floatReg] = val;
|
|
}
|
|
|
|
void
|
|
setRegBits(int floatReg, const FloatRegBits &val, int width)
|
|
{
|
|
setRegBits(floatReg, val);
|
|
}
|
|
|
|
};
|
|
|
|
} // namespace AlphaISA
|
|
|
|
#endif // __ARCH_ALPHA_FLOATREGFILE_HH__
|