gem5  v22.1.0.0
regfile.hh
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27 
28 #ifndef __CPU_REGFILE_HH__
29 #define __CPU_REGFILE_HH__
30 
31 #include <algorithm>
32 #include <cassert>
33 #include <cstring>
34 #include <vector>
35 
36 #include "cpu/reg_class.hh"
37 
38 namespace gem5
39 {
40 
41 class RegFile
42 {
43  private:
45  const size_t _size;
46  const size_t _regShift;
47  const size_t _regBytes;
48 
49  public:
51 
52  RegFile(const RegClass &info, const size_t new_size) :
53  data(new_size << info.regShift()), _size(new_size),
54  _regShift(info.regShift()), _regBytes(info.regBytes()),
55  regClass(info)
56  {}
57 
58  RegFile(const RegClass &info) : RegFile(info, info.numRegs()) {}
59 
60  size_t size() const { return _size; }
61  size_t regShift() const { return _regShift; }
62  size_t regBytes() const { return _regBytes; }
63 
64  template <typename Reg=RegVal>
65  Reg &
66  reg(size_t idx)
67  {
68  assert(sizeof(Reg) == _regBytes && idx < _size);
69  return *reinterpret_cast<Reg *>(data.data() + (idx << _regShift));
70  }
71  template <typename Reg=RegVal>
72  const Reg &
73  reg(size_t idx) const
74  {
75  assert(sizeof(Reg) == _regBytes && idx < _size);
76  return *reinterpret_cast<const Reg *>(
77  data.data() + (idx << _regShift));
78  }
79 
80  void *
81  ptr(size_t idx)
82  {
83  return data.data() + (idx << _regShift);
84  }
85 
86  const void *
87  ptr(size_t idx) const
88  {
89  return data.data() + (idx << _regShift);
90  }
91 
92  void
93  get(size_t idx, void *val) const
94  {
95  std::memcpy(val, ptr(idx), _regBytes);
96  }
97 
98  void
99  set(size_t idx, const void *val)
100  {
101  std::memcpy(ptr(idx), val, _regBytes);
102  }
103 
104  void clear() { std::fill(data.begin(), data.end(), 0); }
105 };
106 
107 } // namespace gem5
108 
109 #endif // __CPU_REGFILE_HH__
size_t regShift() const
Definition: regfile.hh:61
void set(size_t idx, const void *val)
Definition: regfile.hh:99
void get(size_t idx, void *val) const
Definition: regfile.hh:93
void * ptr(size_t idx)
Definition: regfile.hh:81
const size_t _regBytes
Definition: regfile.hh:47
RegFile(const RegClass &info)
Definition: regfile.hh:58
RegFile(const RegClass &info, const size_t new_size)
Definition: regfile.hh:52
size_t size() const
Definition: regfile.hh:60
void clear()
Definition: regfile.hh:104
std::vector< uint8_t > data
Definition: regfile.hh:44
size_t regBytes() const
Definition: regfile.hh:62
Reg & reg(size_t idx)
Definition: regfile.hh:66
const void * ptr(size_t idx) const
Definition: regfile.hh:87
const Reg & reg(size_t idx) const
Definition: regfile.hh:73
const size_t _size
Definition: regfile.hh:45
const RegClass & regClass
Definition: regfile.hh:50
const size_t _regShift
Definition: regfile.hh:46
Bitfield< 63 > val
Definition: misc.hh:776
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....

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