2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #ifndef __ARCH_SPARC_FLOATREGFILE_HH__
33 #define __ARCH_SPARC_FLOATREGFILE_HH__
35 #include "arch/sparc/faults.hh"
36 #include "arch/sparc/isa_traits.hh"
37 #include "arch/sparc/types.hh"
45 std::string getFloatRegName(RegIndex);
47 const int NumFloatArchRegs = 64;
48 const int NumFloatRegs = 64;
50 typedef float float32_t;
51 typedef double float64_t;
52 //FIXME long double refers to a 10 byte float, rather than a
53 //16 byte float as required. This data type may have to be emulated.
54 typedef double float128_t;
59 static const int SingleWidth = 32;
60 static const int DoubleWidth = 64;
61 static const int QuadWidth = 128;
65 //Since the floating point registers overlap each other,
66 //A generic storage space is used. The float to be returned is
67 //pulled from the appropriate section of this region.
68 char regSpace[(SingleWidth / 8) * NumFloatRegs];
74 FloatReg readReg(int floatReg, int width);
76 FloatRegBits readRegBits(int floatReg, int width);
78 Fault setReg(int floatReg, const FloatReg &val, int width);
80 Fault setRegBits(int floatReg, const FloatRegBits &val, int width);
82 void serialize(std::ostream &os);
84 void unserialize(Checkpoint *cp, const std::string §ion);