regfile.cc (11793:ef606668d247) | regfile.cc (12105:742d80361989) |
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1/* 2 * Copyright (c) 2004-2005 The Regents of The University of Michigan 3 * Copyright (c) 2013 Advanced Micro Devices, Inc. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: redistributions of source code must retain the above copyright --- 27 unchanged lines hidden (view full) --- 36#include "cpu/o3/free_list.hh" 37 38PhysRegFile::PhysRegFile(unsigned _numPhysicalIntRegs, 39 unsigned _numPhysicalFloatRegs, 40 unsigned _numPhysicalCCRegs) 41 : intRegFile(_numPhysicalIntRegs), 42 floatRegFile(_numPhysicalFloatRegs), 43 ccRegFile(_numPhysicalCCRegs), | 1/* 2 * Copyright (c) 2004-2005 The Regents of The University of Michigan 3 * Copyright (c) 2013 Advanced Micro Devices, Inc. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: redistributions of source code must retain the above copyright --- 27 unchanged lines hidden (view full) --- 36#include "cpu/o3/free_list.hh" 37 38PhysRegFile::PhysRegFile(unsigned _numPhysicalIntRegs, 39 unsigned _numPhysicalFloatRegs, 40 unsigned _numPhysicalCCRegs) 41 : intRegFile(_numPhysicalIntRegs), 42 floatRegFile(_numPhysicalFloatRegs), 43 ccRegFile(_numPhysicalCCRegs), |
44 baseFloatRegIndex(_numPhysicalIntRegs), 45 baseCCRegIndex(_numPhysicalIntRegs + _numPhysicalFloatRegs), | 44 numPhysicalIntRegs(_numPhysicalIntRegs), 45 numPhysicalFloatRegs(_numPhysicalFloatRegs), 46 numPhysicalCCRegs(_numPhysicalCCRegs), |
46 totalNumRegs(_numPhysicalIntRegs 47 + _numPhysicalFloatRegs 48 + _numPhysicalCCRegs) 49{ | 47 totalNumRegs(_numPhysicalIntRegs 48 + _numPhysicalFloatRegs 49 + _numPhysicalCCRegs) 50{ |
51 PhysRegIndex phys_reg; 52 PhysRegIndex flat_reg_idx = 0; 53 |
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50 if (TheISA::NumCCRegs == 0 && _numPhysicalCCRegs != 0) { 51 // Just make this a warning and go ahead and allocate them 52 // anyway, to keep from having to add checks everywhere 53 warn("Non-zero number of physical CC regs specified, even though\n" 54 " ISA does not use them.\n"); 55 } | 54 if (TheISA::NumCCRegs == 0 && _numPhysicalCCRegs != 0) { 55 // Just make this a warning and go ahead and allocate them 56 // anyway, to keep from having to add checks everywhere 57 warn("Non-zero number of physical CC regs specified, even though\n" 58 " ISA does not use them.\n"); 59 } |
60 // The initial batch of registers are the integer ones 61 for (phys_reg = 0; phys_reg < numPhysicalIntRegs; phys_reg++) { 62 intRegIds.emplace_back(IntRegClass, phys_reg, flat_reg_idx++); 63 } 64 65 // The next batch of the registers are the floating-point physical 66 // registers; put them onto the floating-point free list. 67 for (phys_reg = 0; phys_reg < numPhysicalFloatRegs; phys_reg++) { 68 floatRegIds.emplace_back(FloatRegClass, phys_reg, flat_reg_idx++); 69 } 70 71 // The rest of the registers are the condition-code physical 72 // registers; put them onto the condition-code free list. 73 for (phys_reg = 0; phys_reg < numPhysicalCCRegs; phys_reg++) { 74 ccRegIds.emplace_back(CCRegClass, phys_reg, flat_reg_idx++); 75 } 76 77 // Misc regs have a fixed mapping but still need PhysRegIds. 78 for (phys_reg = 0; phys_reg < TheISA::NumMiscRegs; phys_reg++) { 79 miscRegIds.emplace_back(MiscRegClass, phys_reg, 0); 80 } |
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56} 57 58 59void 60PhysRegFile::initFreeList(UnifiedFreeList *freeList) 61{ 62 // Initialize the free lists. | 81} 82 83 84void 85PhysRegFile::initFreeList(UnifiedFreeList *freeList) 86{ 87 // Initialize the free lists. |
63 PhysRegIndex reg_idx = 0; | 88 int reg_idx = 0; |
64 65 // The initial batch of registers are the integer ones | 89 90 // The initial batch of registers are the integer ones |
66 while (reg_idx < baseFloatRegIndex) { 67 freeList->addIntReg(reg_idx++); | 91 for (reg_idx = 0; reg_idx < numPhysicalIntRegs; reg_idx++) { 92 assert(intRegIds[reg_idx].regIdx == reg_idx); 93 freeList->addIntReg(&intRegIds[reg_idx]); |
68 } 69 70 // The next batch of the registers are the floating-point physical 71 // registers; put them onto the floating-point free list. | 94 } 95 96 // The next batch of the registers are the floating-point physical 97 // registers; put them onto the floating-point free list. |
72 while (reg_idx < baseCCRegIndex) { 73 freeList->addFloatReg(reg_idx++); | 98 for (reg_idx = 0; reg_idx < numPhysicalFloatRegs; reg_idx++) { 99 assert(floatRegIds[reg_idx].regIdx == reg_idx); 100 freeList->addFloatReg(&floatRegIds[reg_idx]); |
74 } 75 76 // The rest of the registers are the condition-code physical 77 // registers; put them onto the condition-code free list. | 101 } 102 103 // The rest of the registers are the condition-code physical 104 // registers; put them onto the condition-code free list. |
78 while (reg_idx < totalNumRegs) { 79 freeList->addCCReg(reg_idx++); | 105 for (reg_idx = 0; reg_idx < numPhysicalCCRegs; reg_idx++) { 106 assert(ccRegIds[reg_idx].regIdx == reg_idx); 107 freeList->addCCReg(&ccRegIds[reg_idx]); |
80 } 81} | 108 } 109} |