2 * Copyright (c) 2009 The University of Edinburgh
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6 * modification, are permitted provided that the following conditions are
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9 * redistributions in binary form must reproduce the above copyright
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11 * documentation and/or other materials provided with the distribution;
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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,
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22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * Authors: Timothy M. Jones
31 #ifndef __ARCH_POWER_REGISTERS_HH__
32 #define __ARCH_POWER_REGISTERS_HH__
34 #include "arch/power/generated/max_inst_regs.hh"
35 #include "arch/power/miscregs.hh"
39 using PowerISAInst::MaxInstSrcRegs;
40 using PowerISAInst::MaxInstDestRegs;
42 // Power writes a misc register outside of the isa parser, so it can't
43 // be detected by it. Manually add it here.
44 const int MaxMiscDestRegs = PowerISAInst::MaxMiscDestRegs + 1;
46 typedef uint8_t RegIndex;
48 typedef uint64_t IntReg;
50 // Floating point register file entry type
51 typedef uint64_t FloatRegBits;
52 typedef double FloatReg;
53 typedef uint64_t MiscReg;
55 // dummy typedef since we don't have CC regs
56 typedef uint8_t CCReg;
58 // Constants Related to the number of registers
59 const int NumIntArchRegs = 32;
61 // CR, XER, LR, CTR, FPSCR, RSV, RSV-LEN, RSV-ADDR
62 // and zero register, which doesn't actually exist but needs a number
63 const int NumIntSpecialRegs = 9;
64 const int NumFloatArchRegs = 32;
65 const int NumFloatSpecialRegs = 0;
66 const int NumInternalProcRegs = 0;
68 const int NumIntRegs = NumIntArchRegs + NumIntSpecialRegs;
69 const int NumFloatRegs = NumFloatArchRegs + NumFloatSpecialRegs;
70 const int NumCCRegs = 0;
71 const int NumMiscRegs = NUM_MISCREGS;
73 // Semantically meaningful register indices
74 const int ReturnValueReg = 3;
75 const int ArgumentReg0 = 3;
76 const int ArgumentReg1 = 4;
77 const int ArgumentReg2 = 5;
78 const int ArgumentReg3 = 6;
79 const int ArgumentReg4 = 7;
80 const int FramePointerReg = 31;
81 const int StackPointerReg = 1;
83 // There isn't one in Power, but we need to define one somewhere
84 const int ZeroReg = NumIntRegs - 1;
86 const int SyscallNumReg = 0;
87 const int SyscallPseudoReturnReg = 3;
88 const int SyscallSuccessReg = 3;
90 // These help enumerate all the registers for dependence tracking.
91 const int FP_Reg_Base = NumIntRegs;
92 const int CC_Reg_Base = FP_Reg_Base + NumFloatRegs;
93 const int Misc_Reg_Base = CC_Reg_Base + NumCCRegs; // NumCCRegs == 0
94 const int Max_Reg_Index = Misc_Reg_Base + NumMiscRegs;
102 enum MiscIntRegNums {
103 INTREG_CR = NumIntArchRegs,
113 } // namespace PowerISA
115 #endif // __ARCH_POWER_REGISTERS_HH__