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Diffstat (limited to 'src/mem/ruby/common/Address.hh')
| -rw-r--r-- | src/mem/ruby/common/Address.hh | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/src/mem/ruby/common/Address.hh b/src/mem/ruby/common/Address.hh new file mode 100644 index 000000000..3c3c5ad30 --- /dev/null +++ b/src/mem/ruby/common/Address.hh @@ -0,0 +1,255 @@ + +/* + * Copyright (c) 1999 by Mark Hill and David Wood for the Wisconsin + * Multifacet Project. ALL RIGHTS RESERVED. + * + * ##HEADER## + * + * This software is furnished under a license and may be used and + * copied only in accordance with the terms of such license and the + * inclusion of the above copyright notice. This software or any + * other copies thereof or any derivative works may not be provided or + * otherwise made available to any other persons. Title to and + * ownership of the software is retained by Mark Hill and David Wood. + * Any use of this software must include the above copyright notice. + * + * THIS SOFTWARE IS PROVIDED "AS IS". THE LICENSOR MAKES NO + * WARRANTIES ABOUT ITS CORRECTNESS OR PERFORMANCE. + * */ + +/* + * $Id$ + */ + +#ifndef ADDRESS_H +#define ADDRESS_H + +#include <iomanip> +#include "Global.hh" +#include "RubyConfig.hh" +#include "NodeID.hh" +#include "MachineID.hh" + +const int ADDRESS_WIDTH = 64; // address width in bytes + +class Address; +typedef Address PhysAddress; +typedef Address VirtAddress; + +class Address { +public: + // Constructors + Address() { m_address = 0; } + explicit Address(physical_address_t address) { m_address = address; } + + Address(const Address& obj); + Address& operator=(const Address& obj); + + // Destructor + // ~Address(); + + // Public Methods + + void setAddress(physical_address_t address) { m_address = address; } + physical_address_t getAddress() const {return m_address;} + // selects bits inclusive + physical_address_t bitSelect(int small, int big) const; + physical_address_t maskLowOrderBits(int number) const; + physical_address_t maskHighOrderBits(int number) const; + physical_address_t shiftLowOrderBits(int number) const; + physical_address_t getLineAddress() const + { return bitSelect(RubyConfig::dataBlockBits(), ADDRESS_WIDTH); } + physical_address_t getOffset() const + { return bitSelect(0, RubyConfig::dataBlockBits()-1); } + + void makeLineAddress() { m_address = maskLowOrderBits(RubyConfig::dataBlockBits()); } + // returns the next stride address based on line address + void makeNextStrideAddress( int stride) { + m_address = maskLowOrderBits(RubyConfig::dataBlockBits()) + + RubyConfig::dataBlockBytes()*stride; + } + void makePageAddress() { m_address = maskLowOrderBits(RubyConfig::pageSizeBits()); } + int getBankSetNum() const; + int getBankSetDist() const; + + Index memoryModuleIndex() const; + + void print(ostream& out) const; + void output(ostream& out) const; + void input(istream& in); + + void setOffset( int offset ){ + // first, zero out the offset bits + makeLineAddress(); + m_address |= (physical_address_t) offset; + } + +private: + // Private Methods + + // Private copy constructor and assignment operator + // Address(const Address& obj); + // Address& operator=(const Address& obj); + + // Data Members (m_ prefix) + physical_address_t m_address; +}; + +inline +Address line_address(const Address& addr) { Address temp(addr); temp.makeLineAddress(); return temp; } + +inline +Address next_stride_address(const Address& addr, int stride) { + Address temp = addr; + temp.makeNextStrideAddress(stride); + temp.setAddress(temp.maskHighOrderBits(ADDRESS_WIDTH-RubyConfig::memorySizeBits())); // surpress wrap-around problem + return temp; +} + +inline +Address page_address(const Address& addr) { Address temp(addr); temp.makePageAddress(); return temp; } + +// Output operator declaration +ostream& operator<<(ostream& out, const Address& obj); +// comparison operator declaration +bool operator==(const Address& obj1, const Address& obj2); +bool operator!=(const Address& obj1, const Address& obj2); +bool operator<(const Address& obj1, const Address& obj2); +/* Address& operator=(const physical_address_t address); */ + +inline +bool operator<(const Address& obj1, const Address& obj2) +{ + return obj1.getAddress() < obj2.getAddress(); +} + +// ******************* Definitions ******************* + +// Output operator definition +inline +ostream& operator<<(ostream& out, const Address& obj) +{ + obj.print(out); + out << flush; + return out; +} + +inline +bool operator==(const Address& obj1, const Address& obj2) +{ + return (obj1.getAddress() == obj2.getAddress()); +} + +inline +bool operator!=(const Address& obj1, const Address& obj2) +{ + return (obj1.getAddress() != obj2.getAddress()); +} + +inline +physical_address_t Address::bitSelect(int small, int big) const // rips bits inclusive +{ + physical_address_t mask; + assert(big >= small); + + if (big >= ADDRESS_WIDTH - 1) { + return (m_address >> small); + } else { + mask = ~((physical_address_t)~0 << (big + 1)); + // FIXME - this is slow to manipulate a 64-bit number using 32-bits + physical_address_t partial = (m_address & mask); + return (partial >> small); + } +} + +inline +physical_address_t Address::maskLowOrderBits(int number) const +{ + physical_address_t mask; + + if (number >= ADDRESS_WIDTH - 1) { + mask = ~0; + } else { + mask = (physical_address_t)~0 << number; + } + return (m_address & mask); +} + +inline +physical_address_t Address::maskHighOrderBits(int number) const +{ + physical_address_t mask; + + if (number >= ADDRESS_WIDTH - 1) { + mask = ~0; + } else { + mask = (physical_address_t)~0 >> number; + } + return (m_address & mask); +} + +inline +physical_address_t Address::shiftLowOrderBits(int number) const +{ + return (m_address >> number); +} + +inline +integer_t Address::memoryModuleIndex() const +{ + integer_t index = bitSelect(RubyConfig::dataBlockBits()+RubyConfig::memoryBits(), ADDRESS_WIDTH); + assert (index >= 0); + if (index >= RubyConfig::memoryModuleBlocks()) { + cerr << " memoryBits: " << RubyConfig::memoryBits() << " memorySizeBits: " << RubyConfig::memorySizeBits() + << " Address: " << "[" << hex << "0x" << m_address << "," << " line 0x" << maskLowOrderBits(RubyConfig::dataBlockBits()) << dec << "]" << flush + << "error: limit exceeded. " << + " dataBlockBits: " << RubyConfig::dataBlockBits() << + " memoryModuleBlocks: " << RubyConfig::memoryModuleBlocks() << + " index: " << index << endl; + } + assert (index < RubyConfig::memoryModuleBlocks()); + return index; + + // Index indexHighPortion = address.bitSelect(MEMORY_SIZE_BITS-1, PAGE_SIZE_BITS+NUMBER_OF_MEMORY_MODULE_BITS); + // Index indexLowPortion = address.bitSelect(DATA_BLOCK_BITS, PAGE_SIZE_BITS-1); + + //Index index = indexLowPortion | (indexHighPortion << (PAGE_SIZE_BITS - DATA_BLOCK_BITS)); + + /* + Round-robin mapping of addresses, at page size granularity + +ADDRESS_WIDTH MEMORY_SIZE_BITS PAGE_SIZE_BITS DATA_BLOCK_BITS + | | | | + \ / \ / \ / \ / 0 + ----------------------------------------------------------------------- + | unused |xxxxxxxxxxxxxxx| |xxxxxxxxxxxxxxx| | + | |xxxxxxxxxxxxxxx| |xxxxxxxxxxxxxxx| | + ----------------------------------------------------------------------- + indexHighPortion indexLowPortion + <-------> + NUMBER_OF_MEMORY_MODULE_BITS + */ +} + +inline +void Address::print(ostream& out) const +{ + out << "[" << hex << "0x" << m_address << "," << " line 0x" << maskLowOrderBits(RubyConfig::dataBlockBits()) << dec << "]" << flush; +} + +class Address; +namespace __gnu_cxx { + template <> struct hash<Address> + { + size_t operator()(const Address &s) const { return (size_t) s.getAddress(); } + }; +} +namespace std { + template <> struct equal_to<Address> + { + bool operator()(const Address& s1, const Address& s2) const { return s1 == s2; } + }; +} + +#endif //ADDRESS_H + |