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32 #include "arch/sparc/floatregfile.hh"
33 #include "base/trace.hh"
34 #include "sim/byteswap.hh"
35 #include "sim/serialize.hh"
39 using namespace SparcISA
;
44 string
SparcISA::getFloatRegName(RegIndex index
)
46 static std::string floatRegName
[NumFloatRegs
] =
47 {"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
48 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
49 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
50 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
51 "f32", "f33", "f34", "f35", "f36", "f37", "f38", "f39",
52 "f40", "f41", "f42", "f43", "f44", "f45", "f46", "f47",
53 "f48", "f49", "f50", "f51", "f52", "f53", "f54", "f55",
54 "f56", "f57", "f58", "f59", "f60", "f61", "f62", "f63"};
55 return floatRegName
[index
];
58 void FloatRegFile::clear()
60 memset(regSpace
, 0, sizeof(regSpace
));
63 FloatReg
FloatRegFile::readReg(int floatReg
, int width
)
65 //In each of these cases, we have to copy the value into a temporary
66 //variable. This is because we may otherwise try to access an
67 //unaligned portion of memory.
74 memcpy(&result32
, regSpace
+ 4 * floatReg
, sizeof(result32
));
75 result32
= htog(result32
);
76 memcpy(&fresult32
, &result32
, sizeof(result32
));
78 DPRINTF(Sparc
, "Read FP32 register %d = [%f]0x%x\n", floatReg
, result
, result32
);
83 memcpy(&result64
, regSpace
+ 4 * floatReg
, sizeof(result64
));
84 result64
= htog(result64
);
85 memcpy(&fresult64
, &result64
, sizeof(result64
));
87 DPRINTF(Sparc
, "Read FP64 register %d = [%f]0x%x\n", floatReg
, result
, result64
);
90 panic("Quad width FP not implemented.");
93 panic("Attempted to read a %d bit floating point register!", width
);
98 FloatRegBits
FloatRegFile::readRegBits(int floatReg
, int width
)
100 //In each of these cases, we have to copy the value into a temporary
101 //variable. This is because we may otherwise try to access an
102 //unaligned portion of memory.
108 memcpy(&result32
, regSpace
+ 4 * floatReg
, sizeof(result32
));
109 result
= htog(result32
);
110 DPRINTF(Sparc
, "Read FP32 bits register %d = 0x%x\n", floatReg
, result
);
114 memcpy(&result64
, regSpace
+ 4 * floatReg
, sizeof(result64
));
115 result
= htog(result64
);
116 DPRINTF(Sparc
, "Read FP64 bits register %d = 0x%x\n", floatReg
, result
);
119 panic("Quad width FP not implemented.");
122 panic("Attempted to read a %d bit floating point register!", width
);
127 Fault
FloatRegFile::setReg(int floatReg
, const FloatReg
&val
, int width
)
129 //In each of these cases, we have to copy the value into a temporary
130 //variable. This is because we may otherwise try to access an
131 //unaligned portion of memory.
141 memcpy(&result32
, &fresult32
, sizeof(result32
));
142 result32
= gtoh(result32
);
143 memcpy(regSpace
+ 4 * floatReg
, &result32
, sizeof(result32
));
144 DPRINTF(Sparc
, "Write FP64 register %d = 0x%x\n", floatReg
, result32
);
148 memcpy(&result64
, &fresult64
, sizeof(result64
));
149 result64
= gtoh(result64
);
150 memcpy(regSpace
+ 4 * floatReg
, &result64
, sizeof(result64
));
151 DPRINTF(Sparc
, "Write FP64 register %d = 0x%x\n", floatReg
, result64
);
154 panic("Quad width FP not implemented.");
157 panic("Attempted to read a %d bit floating point register!", width
);
162 Fault
FloatRegFile::setRegBits(int floatReg
, const FloatRegBits
&val
, int width
)
164 //In each of these cases, we have to copy the value into a temporary
165 //variable. This is because we may otherwise try to access an
166 //unaligned portion of memory.
172 result32
= gtoh((uint32_t)val
);
173 memcpy(regSpace
+ 4 * floatReg
, &result32
, sizeof(result32
));
174 DPRINTF(Sparc
, "Write FP64 bits register %d = 0x%x\n", floatReg
, result32
);
177 result64
= gtoh((uint64_t)val
);
178 memcpy(regSpace
+ 4 * floatReg
, &result64
, sizeof(result64
));
179 DPRINTF(Sparc
, "Write FP64 bits register %d = 0x%x\n", floatReg
, result64
);
182 panic("Quad width FP not implemented.");
185 panic("Attempted to read a %d bit floating point register!", width
);
190 void FloatRegFile::serialize(std::ostream
&os
)
192 uint8_t *float_reg
= (uint8_t*)regSpace
;
193 SERIALIZE_ARRAY(float_reg
,
194 SingleWidth
/ 8 * NumFloatRegs
);
197 void FloatRegFile::unserialize(Checkpoint
*cp
, const std::string
§ion
)
199 uint8_t *float_reg
= (uint8_t*)regSpace
;
200 UNSERIALIZE_ARRAY(float_reg
,
201 SingleWidth
/ 8 * NumFloatRegs
);