1/*
2 * Copyright (c) 2009 The University of Edinburgh
3 * All rights reserved.
4 *
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;

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47
48typedef uint64_t IntReg;
49
50// Floating point register file entry type
51typedef uint64_t FloatRegBits;
52typedef double FloatReg;
53typedef uint64_t MiscReg;
54
55// Constants Related to the number of registers
56const int NumIntArchRegs = 32;
57
58// CR, XER, LR, CTR, FPSCR, RSV, RSV-LEN, RSV-ADDR
59// and zero register, which doesn't actually exist but needs a number
60const int NumIntSpecialRegs = 9;
61const int NumFloatArchRegs = 32;
62const int NumFloatSpecialRegs = 0;
63const int NumInternalProcRegs = 0;
64
65const int NumIntRegs = NumIntArchRegs + NumIntSpecialRegs;
66const int NumFloatRegs = NumFloatArchRegs + NumFloatSpecialRegs;
67const int NumMiscRegs = NUM_MISCREGS;
68
69// Semantically meaningful register indices
70const int ReturnValueReg = 3;
71const int ArgumentReg0 = 3;
72const int ArgumentReg1 = 4;
73const int ArgumentReg2 = 5;
74const int ArgumentReg3 = 6;

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80const int ZeroReg = NumIntRegs - 1;
81
82const int SyscallNumReg = 0;
83const int SyscallPseudoReturnReg = 3;
84const int SyscallSuccessReg = 3;
85
86// These help enumerate all the registers for dependence tracking.
87const int FP_Reg_Base = NumIntRegs;
88const int Misc_Reg_Base = FP_Reg_Base + NumFloatRegs;
89const int Max_Reg_Index = Misc_Reg_Base + NumMiscRegs;
90
91typedef union {
92 IntReg intreg;
93 FloatReg fpreg;
94 MiscReg ctrlreg;
95} AnyReg;
96

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